About: http://webisa.webdatacommons.org/200179461

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This evidence comes primarily fromoccupational studies of workers who were exposed to mixtures of PAHs as a result of theirinvolvement in such processes as coke production, roofing, oil refining, or coal gasification.
http://www.w3.org/ns/prov#wasQuotedFrom	cdc.gov