About: http://webisa.webdatacommons.org/54969193

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 most commonly used spatial data are obtained from sources such as census data, land use surveys, satellite imaginary, aerial photographs and paper maps.
http://www.w3.org/ns/prov#wasQuotedFrom	inforum.cz