About: http://webisa.webdatacommons.org/57953710

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 preferably halogen or (C3-C6)-alkyl, for example fluorine, chlorine, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, tert-amyl or 1,1-dimethylpropyl, in particular chlorine or tert-butyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com