About: http://webisa.webdatacommons.org/452005727

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	itrogens may be substituted with atoms or groups other than H, preferably methyl or other lower alkyl, methoxy or other alkoxy, nitro, and other, preferably electron withdrawing, groups.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com