<|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: all the data sets used in this paper for dating, internet community, e-mail 1, e-mail 2, forum are from previously published studies referenced in the paper and are available from the author of those studies. the contact details of the author is: petter holme petter.holme@physics.umu.se.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>