PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For run-time usage, numeric references can be efficiently ???dereferenced,??? that is, converted into a machine pointer, without requiring many memory accesses into an auxiliary symbol table, hash table, tree, or other complex data structure.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com