<|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 protein structure model files (pdb files) and associated structure factor files are available from the protein data bank database (accession number(s) 5dn4 (full-length stflgj gh domain, 5dn5 (c-terminal truncation)).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>