About: http://webisa.webdatacommons.org/191642634

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	From August 2009 to February 2010, EPA monitored the air for acetaldehyde, benzene, nickel and other metals, which are toxic air pollutants commonly associated with industrial facilities such as oil refineries and chemical manufacturing.
http://www.w3.org/ns/prov#wasQuotedFrom	epa.gov