You are an assistant tasked with analyzing measurement histories to predict the patient's next laboratory or vital sign value.
<PatientData>
Demographics: {'race': 'White', 'gender': 'FEMALE', 'year of birth': 1949}
Prior Diagnosis 1: {'condition': 'Appendicitis', 'condition status': 'Not Extracted', 'start date': '1980-02-23', 'end date': None}
Prior Diagnosis 2: {'condition': 'History of appendectomy', 'condition status': 'Not Extracted', 'start date': '1980-02-23', 'end date': None}
Prior Diagnosis 3: {'condition': 'Prediabetes', 'condition status': 'Not Extracted', 'start date': '1982-07-31', 'end date': None}
Prior Diagnosis 4: {'condition': 'Osteoarthritis of hip', 'condition status': 'Not Extracted', 'start date': '2008-05-26', 'end date': None}
Prior Diagnosis 5: {'condition': 'Acute bronchitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2014-06-18', 'end date': '2014-07-06'}
Prior Diagnosis 6: {'condition': 'Acute bronchitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2016-01-04', 'end date': '2016-01-14'}
Prior Diagnosis 7: {'condition': 'Acute viral pharyngitis (disorder)', 'condition status': 'Not Extracted', 'start date': '2017-01-11', 'end date': '2017-01-23'}
Last Urea Nitrogen measurement on 2015-12-31 00:00:00: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 20.0}
Prior measurements of the same type 1: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mg/dL', 'value': 7.0}
Prior measurements of the same type 2: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 17.0}
Prior measurements of the same type 3: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mg/dL', 'value': 13.0}
Prior measurements of the same type 4: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mg/dL', 'value': 11.0}
Prior measurements of the same type 5: {'measurement': 'Urea Nitrogen', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 20.0}
Prior measurements of different types 1: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': '%', 'value': 6.2}
Prior measurements of different types 2: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'cm', 'value': 168.01}
Prior measurements of different types 3: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'kg', 'value': 88.24}
Prior measurements of different types 4: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'kg/m2', 'value': 31.26}
Prior measurements of different types 5: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mmHg', 'value': 132.0}
Prior measurements of different types 6: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mmHg', 'value': 71.0}
Prior measurements of different types 7: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': '%', 'value': 6.2}
Prior measurements of different types 8: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mg/dL', 'value': 96.0}
Prior measurements of different types 9: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 10: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mg/dL', 'value': 9.26}
Prior measurements of different types 11: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mmol/L', 'value': 142.0}
Prior measurements of different types 12: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mmol/L', 'value': 3.83}
Prior measurements of different types 13: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mmol/L', 'value': 101.0}
Prior measurements of different types 14: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2011-06-16T00:00:00', 'unit': 'mmol/L', 'value': 27.0}
Prior measurements of different types 15: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': '%', 'value': 5.9}
Prior measurements of different types 16: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'cm', 'value': 168.01}
Prior measurements of different types 17: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'kg', 'value': 85.18}
Prior measurements of different types 18: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'kg/m2', 'value': 30.18}
Prior measurements of different types 19: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mmHg', 'value': 131.0}
Prior measurements of different types 20: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mmHg', 'value': 87.0}
Prior measurements of different types 21: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': '%', 'value': 5.9}
Prior measurements of different types 22: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 98.0}
Prior measurements of different types 23: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 24: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 9.08}
Prior measurements of different types 25: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mmol/L', 'value': 144.0}
Prior measurements of different types 26: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mmol/L', 'value': 4.46}
Prior measurements of different types 27: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mmol/L', 'value': 103.0}
Prior measurements of different types 28: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mmol/L', 'value': 28.0}
Prior measurements of different types 29: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 189.0}
Prior measurements of different types 30: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 130.0}
Prior measurements of different types 31: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 94.0}
Prior measurements of different types 32: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2012-08-04T00:00:00', 'unit': 'mg/dL', 'value': 69.0}
Prior measurements of different types 33: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': '%', 'value': 6.1}
Prior measurements of different types 34: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'cm', 'value': 168.01}
Prior measurements of different types 35: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'kg', 'value': 83.19}
Prior measurements of different types 36: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'kg/m2', 'value': 29.47}
Prior measurements of different types 37: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mmHg', 'value': 126.0}
Prior measurements of different types 38: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mmHg', 'value': 88.0}
Prior measurements of different types 39: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': '%', 'value': 6.1}
Prior measurements of different types 40: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mg/dL', 'value': 71.0}
Prior measurements of different types 41: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 42: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mg/dL', 'value': 10.09}
Prior measurements of different types 43: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mmol/L', 'value': 136.0}
Prior measurements of different types 44: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mmol/L', 'value': 4.43}
Prior measurements of different types 45: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mmol/L', 'value': 109.0}
Prior measurements of different types 46: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2013-09-15T00:00:00', 'unit': 'mmol/L', 'value': 28.0}
Prior measurements of different types 47: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 48: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'cm', 'value': 168.01}
Prior measurements of different types 49: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'kg', 'value': 82.01}
Prior measurements of different types 50: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'kg/m2', 'value': 29.05}
Prior measurements of different types 51: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mmHg', 'value': 116.0}
Prior measurements of different types 52: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mmHg', 'value': 86.0}
Prior measurements of different types 53: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 54: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mg/dL', 'value': 91.0}
Prior measurements of different types 55: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 56: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mg/dL', 'value': 9.6}
Prior measurements of different types 57: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mmol/L', 'value': 137.0}
Prior measurements of different types 58: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mmol/L', 'value': 3.8}
Prior measurements of different types 59: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mmol/L', 'value': 104.0}
Prior measurements of different types 60: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2014-11-04T00:00:00', 'unit': 'mmol/L', 'value': 24.0}
Prior measurements of different types 61: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 62: {'measurement': 'Body Height', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'cm', 'value': 168.01}
Prior measurements of different types 63: {'measurement': 'Body Weight', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'kg', 'value': 80.57}
Prior measurements of different types 64: {'measurement': 'Body Mass Index', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'kg/m2', 'value': 28.54}
Prior measurements of different types 65: {'measurement': 'Systolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mmHg', 'value': 108.0}
Prior measurements of different types 66: {'measurement': 'Diastolic Blood Pressure', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mmHg', 'value': 83.0}
Prior measurements of different types 67: {'measurement': 'Hemoglobin A1c/Hemoglobin.total in Blood', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': '%', 'value': 6.3}
Prior measurements of different types 68: {'measurement': 'Glucose', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 91.0}
Prior measurements of different types 69: {'measurement': 'Creatinine', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 1.0}
Prior measurements of different types 70: {'measurement': 'Calcium', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 9.37}
Prior measurements of different types 71: {'measurement': 'Sodium', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mmol/L', 'value': 143.0}
Prior measurements of different types 72: {'measurement': 'Potassium', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mmol/L', 'value': 4.3}
Prior measurements of different types 73: {'measurement': 'Chloride', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mmol/L', 'value': 102.0}
Prior measurements of different types 74: {'measurement': 'Carbon Dioxide', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mmol/L', 'value': 28.0}
Prior measurements of different types 75: {'measurement': 'Total Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 191.0}
Prior measurements of different types 76: {'measurement': 'Triglycerides', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 143.0}
Prior measurements of different types 77: {'measurement': 'Low Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 95.0}
Prior measurements of different types 78: {'measurement': 'High Density Lipoprotein Cholesterol', 'measurement type': 'EHR encounter record', 'measurement date': '2015-12-31T00:00:00', 'unit': 'mg/dL', 'value': 67.0}
Prior measurements of different types 79: {'measurement': 'Oral temperature', 'measurement type': 'EHR encounter record', 'measurement date': '2017-01-12T00:00:00', 'unit': 'Cel', 'value': 38.0}
Visit 1: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2011-06-16', 'end datetime': '2011-06-16'}
Visit 2: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2012-08-04', 'end datetime': '2012-08-04'}
Visit 3: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2013-09-15', 'end datetime': '2013-09-15'}
Visit 4: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-06-20', 'end datetime': '2014-06-20'}
Visit 5: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-07-29', 'end datetime': '2014-07-29'}
Visit 6: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2014-11-04', 'end datetime': '2014-11-04'}
Visit 7: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2015-12-31', 'end datetime': '2015-12-31'}
Visit 8: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2016-01-07', 'end datetime': '2016-01-07'}
Visit 9: {'visit': 'Outpatient Visit', 'visit type': 'EHR encounter record', 'start datetime': '2017-01-12', 'end datetime': '2017-01-12'}
Medication 1: {'Drug name': 'Penicillin V Potassium 250 MG', 'Start datetime': '1951-03-06', 'End datetime': '1951-03-06', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 2: {'Drug name': 'Naproxen sodium 220 MG [Aleve]', 'Start datetime': '2008-05-26', 'End datetime': '2008-05-26', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 3: {'Drug name': 'Acetaminophen 160 MG', 'Start datetime': '2014-06-20', 'End datetime': '2014-07-06', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Medication 4: {'Drug name': 'Acetaminophen 160 MG', 'Start datetime': '2016-01-07', 'End datetime': '2016-01-14', 'Route': None, 'Quantity': 'Not Extracted', 'Stop Reason': 'Not Extracted', 'Dose Unit': 'Not Extracted'}
Procedure 1: {'procedure': 'Plain chest X-ray (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-06-20', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 2: {'procedure': 'Colonoscopy', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2014-07-29', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 3: {'procedure': 'Documentation of current medications', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2015-12-31', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
Procedure 4: {'procedure': 'Measurement of respiratory function (procedure)', 'procedure type': 'EHR encounter record', 'procedure start datetime': '2016-01-07', 'procedure end datetime': 'Not Extracted', 'modifier': 'Not Extracted'}
</PatientData>
Based on the trajectory above, what will the patient's **next** Urea Nitrogen value be on 2017-02-21 00:00:00?
A. 10.0
B. 12.0
C. 17.0
D. 18.0
E. 12.0
Please share a single capital letter representing your selected answer: 
10.0 12.0 17.0 18.0 12.0