メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.7500000 33.8958334, 132.7562500 33.8958334, 132.7562500 33.9000000, 132.7500000 33.9000000, 132.7500000 33.8958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral