<|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 are questionnaires filled out by the participants of the study. the responses were used to generate the tables in the paper which consist of simple frequencies of the responses. all 120 questionnaires are available as hard copy and they can be scanned and provided if necessary. all data are available from the dryad database: http://dx.doi.org/10.5061/dryad.3n451.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>