PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • it is best to fix it now, then to go back to it later on and find out which layer is causing the issue, especially in projects where layers reach beyond the 100 mark this can be a very annoying problem.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tutsplus.com