<|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: all whitehall ii study data are freely available but not on a public repository. the authors follow mrc guidelines, main funding source for the data collection, and use a gated access policy, details of which are available on the authors website: http://www.ucl.ac.uk/whitehallii/data-sharing. data can be requested from severine.sabia@inserm.fr.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>