PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There are devices you can install in septic tanks that will report problems such as scum and sludge levels, potential backup problems, etc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • costowl.com