メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.1937500 34.5375000, 133.2000000 34.5375000, 133.2000000 34.5416667, 133.1937500 34.5416667, 133.1937500 34.5375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral