PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • R1 and R2, independently of one another, are particularly preferably methyl or ethyl, in particular methyl.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com