<|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 all data underlying the findings are fully available without restriction. our work considered books in their regular commercial versions. all versions of the books in their original formats and instructions for obtaining them are available at http://books.google.com and (commercially) at such sites as http://www.amazon.com.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>