PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In this context one should also mention the SPIRES HEP Literature Database that reaches all the way back to 1974 - which is incidentally the year in which it was realized that string theory is a theory of quantum gravity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • utexas.edu