PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Their work is motivated by the fact that, in some places, such as dense urban environments or indoors, GPS is noisy and maps are unavailable, which can cause MAVs to get lost, fly into dangerous regions, or collide with obstacles.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org