About: http://webisa.webdatacommons.org/178976389

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
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