<|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: this study uses anonymized secondary data (german socio-economic panel) collected by the german institute for economic research (diw). the german socio-economic panel (soep) is approved as being in accordance with the standards of the federal republic of germany for lawful data protection, and all participants gave free and informed consent to participate in the survey. the survey ethics are monitored by an independent advisory board at the diw. the authors signed a contract with the data holders to permit the use and publishing of data for scientific purposes. data from the soep are made available to all interested researchers upon request from the german institute for economic research (diw berlin). the contact is michaela engelmann (soepmail@diw.de).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>