About: http://webisa.webdatacommons.org/279475590

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	Contaminant also refers to the substances listed in the indoor air quality standards proposed by OSHA, WHO, ASHRAE, and other organizations.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com