<|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 data we have used was obtained from tcga and the search parameters and downloaded data is explained in the methods section. tcga data can be found at this url https://tcga-data.nci.nih.gov/tcga/dataaccessmatrix.htm.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>