About: http://webisa.webdatacommons.org/100378472

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	The radicals R, R1 and R7 are preferably hydrogen, halogens, in particular fluorine or chlorine, aliphatic or aromatic hydrocarbons having from 1 to 10, in particular from 1 to 6, carbon atoms.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com