About: http://webisa.webdatacommons.org/103140514

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	R3 is hydrogen or a hydrocarbyl group, which may be derived from a polyolefin, for example polyethylene, polypropylene, polybutylene, or polyisobutylene, or a polyolefin copolymer, for example an ethylene/propylene copolymer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com