PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A. Vilenkin and E. P. S. Shellard, Cosmic strings and other topological defects,
http://www.w3.org/ns/prov#wasQuotedFrom
  • oakland.edu