メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.6875000 33.9041667, 134.6937500 33.9041667, 134.6937500 33.9083333, 134.6875000 33.9083333, 134.6875000 33.9041667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral