PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In case that the pharmaceutically active substance is a peptide or a protein, the substance may be either anionic or cationic, depending upon pH of the composition.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com