About: http://webisa.webdatacommons.org/215141606

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, he dealt with chemical agents such as trichloroethylene, trichloromethane, acetone, freon and nitric acid.
http://www.w3.org/ns/prov#wasQuotedFrom	hcn.org