<|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 we must make our data available only upon request. prof. susan a. graham of the university of calgary owns the data, but will supply upon request. data are from the "symbolic openness" study completed at the university of calgary. to request the data please contact grahams@ucalgary.ac.nz.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>