<|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: data are derived from two previously published studies (darrah et al. nat med 2007 and almeida et al blood 2009). the data used for our study are available in the two supplemental tables.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>