<|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 considerations, the data from the nagahama study are available upon request by contacting kazuo chin, department of respiratory care and sleep control medicine graduate school of medicine, kyoto university (chink@kuhp.kyoto-u.ac.jp).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>