メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.354998249738 43.7802215742224, 142.354494430035 43.780292701283, 142.354162908273 43.7803472109115, 142.353880129949 43.7803945885876, 142.353633117968 43.7804348484791, 142.353387724269 43.7804786573262, 142.353364873817 43.780426850768, 142.353162025299 43.7798505681637, 142.352489955584 43.7779988376183, 142.353707242587 43.7778585818213, 142.354998249738 43.7802215742224)) ^^http://www.opengis.net/ont/geosparql#wktLiteral