About: http://webisa.webdatacommons.org/276575570

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 alkyl groups containing 1 to 4 carbon atoms, more particularly R1, R2 and R3, include in particular the methyl, ethyl, n-propyl, isopropyl, n-butyl, sec.butyl, isobutyl and tert.butyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es