PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Preferred atoms or groups represented by R4, R5, R6, R7 and R8 are a hydrogen atom, a halogen atom, a methyl group, an ethyl group, a methoxy group, and an ethoxy group, the hydrogen atom or halogen atom being especially preferred.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com