PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • R4, R5 and R6, which may be identical or different, are each chosen from alkyl groups comprising from 1 to 18 carbon atoms, such as from 1 to 6 carbon atoms, and benzyl groups;
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com