<|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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. the data used in this study are from the government of kenya. the data is freely available upon request from the kenya national bureau of statistics: http://statistics.knbs.or.ke/nada/index.php/catalog/10.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>