メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9250000 33.0125000, 132.9312500 33.0125000, 132.9312500 33.0166667, 132.9250000 33.0166667, 132.9250000 33.0125000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral