<|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. analysis has been performed on the tcga dataset which is freely accessible on the tcga data portal (https://tcga-data.nci.nih.gov/tcga/). level 3 data are accessible without restrictions, while level 1 data and clinical information is accessible after an application is filed through the tcga data portal. policies for tcga data access are explained at http://cancergenome.nih.gov/abouttcga/policies/policiesguidelines.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>