<|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 sourced from thomson reuters web of science (wos). the sample 1 data were collected from wos in 12-23-2015 and the sample 2 data were collected from wos in 01-13-2014. the authors described in s1 appendix and s2 appendix the procedures for obtaining the sample 1 and sample 2, respectively. however, considering the weekly update of the accessible data via wos, the obtained figures will constantly depend on the access time to the data base.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>