メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.7562500 34.8333333, 133.7625000 34.8333333, 133.7625000 34.8375000, 133.7562500 34.8375000, 133.7562500 34.8333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral