メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.909087718195 35.1065191016842, 136.909069868445 35.1065132888772, 136.907838451909 35.1061123247406, 136.907975421832 35.1056437317884, 136.909160015373 35.1060456507237, 136.909196013221 35.1060579106531, 136.909087718195 35.1065191016842)) ^^http://www.opengis.net/ont/geosparql#wktLiteral