PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Footsteps can be detected when a piezo disc with an attached rod is mounted on or under a flat surface such as a wood floor or step.
http://www.w3.org/ns/prov#wasQuotedFrom
  • makezine.com