About: http://webisa.webdatacommons.org/135617616

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	There have been thousands of hours dedicated by toxicologists, health officials and other scientists to set the risk-based criteria for PAHs.
http://www.w3.org/ns/prov#wasQuotedFrom	cdc.gov