About: http://webisa.webdatacommons.org/180466132

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	The compass was a critical tool used by surveyors to define angles between points on land.
http://www.w3.org/ns/prov#wasQuotedFrom	mainememory.net