About: http://webisa.webdatacommons.org/75987986

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	Wherein, n and n' are integers, while X is an atom selected from among F, Cl, Br, I and CN.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com