<|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 authors confirm that all data underlying the findings are fully available without restriction. all data underlying the findings in our study are freely available from the joint pekingu-polyu center for child development and learning of peking university. the name of the individual that readers may contact to request the data: xiangzhi meng, department of psychology, peking university, beijing 100871, china; tel: 86-10-6275-1831; fax: 86-10-6276-1081; email: mengxzh@pku.edu.cn.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>