<|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: the data used in this paper are held in public repositories. all english longitudinal study of ageing (elsa) data files are available from the united kingdom data service repository (url: http://discover.ukdataservice.ac.uk/catalogue?sn=5050 doi: http://dx.doi.org/10.5255/ukda-sn-5050-10). all indonesian family life surveys (ifls) data files are available from the rand labor and population repository (url: http://www.rand.org/labor/fls/ifls/access2.html) or from world bank microdata library (url:http://microdata.worldbank.org/index.php/catalog/1044, reference id: idn_2007_ifls_v01_m).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>