<|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: data owned by the authors cannot be made freely available due to approved research protocol restrictions and because it contains identifying information. none of the authors is affiliated to the farm cooperatives and their data were obtained as part of a "data transfer agreement"; thus, permission from third parties is required. all relevant data are available after positive evaluation by the institutional review board upon request by contacting professor dick heederik (d.heederik@uu.nl).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>