<|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 authors do not own the data underlying this study. the census data underlying the social vulnerability classification may be available to other interested researchers by applying to the director general, liberia institute of statistics and geo-information services (lisgis) in monrovia, liberia (mr. johnson q. kei, email: johnson.kei@lisgis.net). the ebola virus disease data are freely available to all interested parties from the world health organizations website, http://www.who.int/csr/disease/ebola/situation-reports/en/.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>