<|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 used to support the findings of this study were provided by Dr. Longxiang Su and Dr. Na Hong under license and thus cannot be made freely available. Access to these data will be considered by the author upon request.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>