メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.734152478025 34.7087602394516, 137.734129018624 34.709732003349, 137.733705251459 34.7094607279197, 137.733439440244 34.7093280604591, 137.733641474866 34.709329330002, 137.733551994328 34.7091274836606, 137.733405953576 34.7087517461468, 137.734152478025 34.7087602394516)) ^^http://www.opengis.net/ont/geosparql#wktLiteral