メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9062500 33.0083333, 132.9125000 33.0083333, 132.9125000 33.0125000, 132.9062500 33.0125000, 132.9062500 33.0083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral