About: http://webisa.webdatacommons.org/135373686

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	The evidence inhumans comes primarily from occupational studies of workers exposed to mixtures containingPAHs as a result of their involvement in such processes as coke production, roofing, oil refining,or coal gasification.
http://www.w3.org/ns/prov#wasQuotedFrom	cdc.gov