About: http://webisa.webdatacommons.org/64731012

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	A1 is C2 -C4 -alkylene, such as --CH2 CH2 --, --CH2 CH2 CH2 -- and --CH2 CH2 CH2 CH2 --, which may carry from one to three C1 -C3 -alkyl groups, such as methyl, ethyl, propyl and 1-methylethyl, in particular methyl;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com