PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some liquids, such as silicon oil and liquid monomer, are suitable for the lens because they have a high refractive index and low density.
http://www.w3.org/ns/prov#wasQuotedFrom
  • opticsinfobase.org