メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.7375000 35.0333333, 132.7437500 35.0333333, 132.7437500 35.0375000, 132.7375000 35.0375000, 132.7375000 35.0333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral