<|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 at ages 7, 9, and 10 are freely accessible at http://www.teds.ac.uk/srcddataset.html. due to ethical restrictions imposed by the study's ethics review board and patient consent, the data are available upon request. request for access to further data should be made to professor robert plomin (robert.plomin@kcl.ac.uk).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>