About: http://webisa.webdatacommons.org/283221387

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	Chemicals including ammonia, hydrogen sulphide, styrene and formaldehyde are among frequent air pollutants.
http://www.w3.org/ns/prov#wasQuotedFrom	worldbulletin.net