メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.379711840167 37.3497271222082, 140.377077711089 37.3495402027495, 140.376197224563 37.3494849808157, 140.376349017614 37.3479564635129, 140.378983997122 37.3481293155307, 140.379408410818 37.3481667756081, 140.379689658899 37.3481851862357, 140.379842983797 37.3482436110192, 140.379711840167 37.3497271222082)) ^^http://www.opengis.net/ont/geosparql#wktLiteral