メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.6812500 32.9958334, 132.6875000 32.9958334, 132.6875000 33.0000000, 132.6812500 33.0000000, 132.6812500 32.9958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral