<http://webisa.webdatacommons.org/230952370>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/230952370>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikipedia.org> .
<http://webisa.webdatacommons.org/prov/134258337>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/230952370> .
<http://webisa.webdatacommons.org/230952370>	<http://www.w3.org/ns/prov#value>	"Because of migration and other factors, 75% of the cohort is lost, as the ones who moved out are not followed.[5][23]" .