About: http://webisa.webdatacommons.org/146342886

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	Contaminants generally can be any material in biogas 303 other than methane, including carbon dioxide, nitrogen, ammonia, sulfides, and siloxanes.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com