PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Insulating layers as described above are relatively inexpensive to form, do not emit alpha radiation, nor do they involve highly toxic materials such as beryllium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com