PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The language ???substantially free of chemical precursors or other chemicals??? includes preparations of peptide in which the peptide is separated from chemical precursors or other chemicals that are involved in the synthesis of the peptide.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.co.uk