About: http://webisa.webdatacommons.org/392725207

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	l amount of a heterocyclic nitrogen-containing compound of the formula wherein R is an orthoaromatic hydrocarbon nucleus, X is CH NH, S, O, or Se, Z is N or C-Y, wherein Y is H, NH alkyl of one to four carbon atoms, or halogen. 8.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com