About: http://webisa.webdatacommons.org/202295585

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	Air pollutants such as carbon monoxide, hydrocarbons, lead, nitrogen dioxide and sulfur oxides come from cars, industry, homes, schools and a variety of other sources.
http://www.w3.org/ns/prov#wasQuotedFrom	jieas.com