<|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 relevant data are within the paper and its supporting information files. databases used: oecd (2012) main science and technology indicators (oecd, paris). unesco, institute for statistics (2013), http://stats.uis.unesco.org/unesco/reportfolders/reportfolders.aspx?if_activepath=p,54&if_language=eng; us patent and trademark office, (2013). ftp://ftp.uspto.gov/pub/taf/; wipo, industrial property statistics  aggregate patent data, (2013).http://www.wipo.int/ipstats/en/statistics/patents/index.html; world bank, (2012).world development indicators, www.worldbank.org.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>