• Any geometry:

  • WKT, GML, and RDF+WKT/GML, as per the GeoSPARQL specification .
  • KML (Keyhole Markup Language) - note that KML supports the following geometries only: point, line string, linear ring, and polygon.
  • RDF as per the schema.org vocabulary (see classes schema:GeoCoordinates and schema:GeoShape ).

• Points: one of the above, or:

  • RDF as per the W3C Basic Geo (WGS84 lat/long) vocabulary .
  • GeoHash URI references.

The location property links any resource to the Location Class. Asserting the location relationship implies only that the domain has some connection to a Location in time or space. It does not imply that the resource is necessarily at that location at the time when the assertion is made.

A geographic name is a proper noun applied to a spatial object. Taking the example used in the INSPIRE document (page 18), the following are all valid geographic names for the Greek capital:

• A?n?a (the Greek endonym written in the Greek script)
• Athína (the standard Romanisation of the endonym)
• Athens (the English language exonym)

For INSPIRE-conformant data, provide the metadata for the geographic name using a skos:Concept as a datatype.

Depending on how a geometry is encoded (see usage note of the locn:Geometry class), the range of this property may be either a literal (e.g., WKT - string literal -, GML, KML - XML literal) or a geometry class, as those defined in the OGC's GeoSPARQL specification , in the W3C's Basic Geo (WGS84 lat/long) vocabulary , and at schema.org , or even the GeoHash URI references.

The following are examples of equivalent statements using different geometry encodings:

• WKT (GeoSPARQL)

  <ex:a> locn:geometry
    "<http://www.opengis.net/def/crs/OGC/1.3/CRS84> Point(-0.001475 51.477811)"^^ogc:WKTLiteral .

• GML

  <ex:a> locn:geometry
    "<gml:Point srsName='http://www.opengis.net/def/crs/OGC/1.3/CRS84'>
    <gml:coordinates>-0.001475, 51.477811</gml:coordinates></gml:Point>"^^ogc:GMLLiteral .

• RDF+WKT (GeoSPARQL)

  <ex:a> locn:geometry
    [ a ogc:Point; ogc:asWKT "<http://www.opengis.net/def/crs/OGC/1.3/CRS84> Point(-0.001475 51.477811)"^^ogc:WKTLiteral ] .

• RDF+GML (GeoSPARQL)

  <ex:a> locn:geometry
    [ a ogc:Point; ogc:asGML
       "<gml:Point srsName='http://www.opengis.net/def/crs/OGC/1.3/CRS84'>
        <gml:coordinates>-0.001475, 51.477811</gml:coordinates></gml:Point>"^^ogc:GMLLiteral ] .

• RDF (WGS84 lat/long)

  <ex:a> locn:geometry [ a geo:Point; geo:lat "51.477811"; geo:long "-0.001475" ] .

• RDF (schema.org)

  <ex:a> locn:geometry [ a schema:GeoCoordinates; schema:latitude "51.477811"; schema:longitude "-0.001475" ] .

• URI reference (GeoHash)

                        <ex:a> locn:geometry <
                        http://geohash.org/gcpuzgnzvxkp
                        > .