About: http://webisa.webdatacommons.org/451280212

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	In the general formula (1), R1 and R2 include preferably a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms, particularly one having 2 to 10 carbon atoms.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au