PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • My view is that surrogate keys are fine and very useful, mainly because natural keys can lead to very big primary keys in the low end of a chain of connected tables - and this is not handled well by many RDBMS, clustered indexes get big, etc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com