About: http://webisa.webdatacommons.org/312275339

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	It is also generally preferred for A to represent an alkylene group which contains from 2 to 6 carbon atoms, such as ethylene groups, propylene groups, butylene groups, pentylene groups and hexylene groups.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com