About: http://webisa.webdatacommons.org/74692121

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	Carcinogens such as asbestos, benzene, chromium, and radon were first identified in occupational environments.
http://www.w3.org/ns/prov#wasQuotedFrom	occupationalcancer.ca