About: http://webisa.webdatacommons.org/341937798

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	lower alkyl, for example phenyl, p-tolyl, benzyl or phenylethyl, but are preferably identical substituents, and Rc is halogen, especially chlorine, or is one of the hydrocarbon radicals mentioned for Ra and Rb, especially methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com