<|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 do not own the data underlying this study. the modis satellite data are freely available from (https://lpdaac.usgs.gov/data_access). the wildfires data is freely and openly available upon request by contacting dr. silvio cocco of the forest fire division of the regional forest service of sardinia (cfva.aibscuolaforestale@regione.sardegna.it).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>