PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Hydroxyl, amine and other reactive groups are found in formula 1 compounds at, e.g., R1 or R2.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com