メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.512038413332 34.7226008542596, 136.511592686644 34.7227630069534, 136.5110154111 34.7227426085167, 136.511007753362 34.7216502299297, 136.511925027836 34.7214545520894, 136.512038413332 34.7226008542596)) ^^http://www.opengis.net/ont/geosparql#wktLiteral