<http://webisa.webdatacommons.org/285516397>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<lef.org> .
<http://webisa.webdatacommons.org/285516397>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/397648851>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/285516397> .
<http://webisa.webdatacommons.org/prov/268423894>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/285516397> .
<http://webisa.webdatacommons.org/285516397>	<http://www.w3.org/ns/prov#value>	"Eye examinations, food frequency questionnaires, and telephone interviews concerning demographic characteristics, smoking status, health history, and other factors were administered to 681 men." .