About: http://webisa.webdatacommons.org/2588883

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	Examples of nitrogen sources include gaseous ammonia, aqueous ammonia, ammonium salts and other nitrogen-containing inorganic and organic compounds.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com