メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5375000 33.5666667, 132.5437500 33.5666667, 132.5437500 33.5708334, 132.5375000 33.5708334, 132.5375000 33.5666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral