About: http://webisa.webdatacommons.org/309196129

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	Thus, highly preferably Y is a nitrogen or phosphorus containing group corresponding to the formula ???N(R?????? or ???P(R??????)???, wherein R?????? is C1-10 alkyl or aryl, i.e., an amido or phosphido group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com