About: http://webisa.webdatacommons.org/100347946

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	X4 denotes a nucleophilic leaving group such as a hydroxy or alkoxy group or a halogen atom, e.g. a chlorine, bromine or iodine atom or a methoxy or ethoxy group, or with the reactive derivatives thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com