<|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 patent databases are available from the following urls: the institute of intellectual property (iip) patent database (http://www.iip.or.jp/e/e_patentdb/); the national bureau of economic research (nber) u.s. patent citations data (http://www.nber.org/patents/); patent network dataverse (https://thedata.harvard.edu/dvn/dv/patent/faces/study/studypage.xhtml;jsessionid=ddde7d71721ae0b02bf9fdc85f37?globalid=hdl:1902.1/15705&studylistingindex=0_ddde7d71721ae0b02bf9fdc85f37).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>