About: http://webisa.webdatacommons.org/418002235

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	If E1C is nitrogen, then E2C to E4C are each preferably nitrogen or carbon, in particular carbon.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca