PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I would recommend trying these tests (and even others, including the index if you really wish) on your setup (e.g., creating a separate table and running tests like these) and consider your data set (measure/estimate the % of records that will be non-zero when your cron job runs).
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com