PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • These results are an unambiguous indication of atomic layering with an interlayer spacing d???2??/qz=2.5???2.7 ??.
http://www.w3.org/ns/prov#wasQuotedFrom
  • harvard.edu