<|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: Data retrieved from: Covid-19 Johns Hopikins repository, Brazillian Datasus portal, Brazilian institute for geography and statistics and Brazillian Ministry of Health.   https://coronavirus.jhu.edu/map.html   http://tabnet.datasus.gov.br/cgi/tabcgi.exe?cnes/cnv/leiutibr.def   https://www.ibge.gov.br/estatisticas/sociais/populacao.html<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>