メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5562500 33.5541667, 132.5625000 33.5541667, 132.5625000 33.5583333, 132.5562500 33.5583333, 132.5562500 33.5541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral