About: http://webisa.webdatacommons.org/25211868

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 R2 and R3 individually represent an alkyl group having 1 to 20 carbon atoms or an aryl group, X is a halogen atom, c is an integer from 0 to 2, and b is an integer from 1 to 4, provided that c+b is an integer from 2 to 4.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es