メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9062500 34.0416667, 132.9125000 34.0416667, 132.9125000 34.0458334, 132.9062500 34.0458334, 132.9062500 34.0416667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral