<http://webisa.webdatacommons.org/prov/377331091>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/16933146> .
<http://webisa.webdatacommons.org/prov/75989457>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/16933146> .
<http://webisa.webdatacommons.org/16933146>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nextbigfuture.com> .
<http://webisa.webdatacommons.org/16933146>	<http://www.w3.org/ns/prov#value>	"In China, epidemiological studies have been conducted beginning in the 1980s and 1990s in Beijing, Shenyang, Shanghai, and other cities." .
<http://webisa.webdatacommons.org/16933146>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .