メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.183920587255 34.2347602972601, 135.182490357703 34.2345944008482, 135.182541171841 34.234205659084, 135.183902089998 34.2343472882306, 135.183920587255 34.2347602972601)) ^^http://www.opengis.net/ont/geosparql#wktLiteral