About: http://webisa.webdatacommons.org/292773824

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	X is a hydrogen atom, a monovalent organic group, or a halogen atom, and Y is a direct bond or a divalent organic group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com