<|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 files are available from the world values survey (http://www.worldvaluessurvey.org/), european values study (http://www.europeanvaluesstudy.eu/), the united nations (http://unstats.un.org/unsd/demographic/sconcerns/popchar/popchar2.htm), the world bank (http://data.worldbank.org/indicator), freedom house (http://www.freedomhouse.org/report-types/freedom-world), and transparency international (http://archive.transparency.org/policy_research/surveys_indices/cpi/previous_cpi).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>