About: http://webisa.webdatacommons.org/196511536

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	In a vehicle such as a ship or aircraft, a compass is influenced by the magnetism of the iron used in the construction of the vehicle as well as the Earth's magnetic field.
http://www.w3.org/ns/prov#wasQuotedFrom	nrcan.gc.ca