<http://webisa.webdatacommons.org/prov/430015103>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/52531805> .
<http://webisa.webdatacommons.org/prov/441321781>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/52531805> .
<http://webisa.webdatacommons.org/52531805>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/52531805>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<orangeparkmedical.com> .
<http://webisa.webdatacommons.org/52531805>	<http://www.w3.org/ns/prov#value>	"While the overall link between smoking and heart problems, as well as smoking and cancer and other health problems, has been known for a long time, experts knew less about how the quantity and duration of cigarette smoking affected risk." .