メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5125000 32.9083333, 132.5187500 32.9083333, 132.5187500 32.9125000, 132.5125000 32.9125000, 132.5125000 32.9083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral