メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9437500 33.6208334, 132.9500000 33.6208334, 132.9500000 33.6250000, 132.9437500 33.6250000, 132.9437500 33.6208334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral