<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: the data was collected as part of a longitudinal study at washington university school of medicine supported by grants from nih (p01 ag03991 and p50 ag05681). all data is owned by the washington university school of medicine and kept at washington university. data requests can be directly made to john morris at washington university (morrisj@abraxas.wustl.edu). if approved, a minimal dataset of the de-identified variables (demographics, cognitive and physical scores) used in this project to replicate this study would be made available to the requestor. this process is in place to assure that the parent grants can track data requests and usage as part of the required grant reporting process and to assure the protection of rights and privacy of our research participants.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>