メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.890409952873 35.24318340163, 136.889452625219 35.2431908508488, 136.889433041914 35.2420426148246, 136.88893790281 35.2420399963488, 136.888486327667 35.2420375458301, 136.888470752795 35.2407572041683, 136.890407698696 35.2407471521449, 136.890401456503 35.2429190110859, 136.890409952873 35.24318340163)) ^^http://www.opengis.net/ont/geosparql#wktLiteral