About: http://webisa.webdatacommons.org/341191366

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 may be halogen, particularly chlorine or bromine, or hydrogen, but is halogen when R is alkyl, and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com