<|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: due to ethical restrictions involving sensitive clinical data, the anonymized european data format (edf) of the psg recording files from the final four patients included in the study are available upon request from the corresponding author: pietro-luca ratti.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>