About: http://webisa.webdatacommons.org/123706929

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	a thin magnetized bar of steel situated within an instrument, such as a compass, so that it indicates the direction of the earth's magnetic poles.
http://www.w3.org/ns/prov#wasQuotedFrom	wordsmyth.net