About: http://webisa.webdatacommons.org/434945349

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	Power plants, vehicle exhaust and many kinds of factories are major sources of ozone-causing emissions.
http://www.w3.org/ns/prov#wasQuotedFrom	wvgazette.com