About: http://webisa.webdatacommons.org/436811331

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	Then, three marks PP1, PP2, PP3 are inputted on the specified to-be-displaced region, and three reference marks PK1, PK2, PK3 are inputted in a region other than the specified to-be-displaced region for defining a coordinate system.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk