メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5000000 40.5375000, 141.5062500 40.5375000, 141.5062500 40.5416667, 141.5000000 40.5416667, 141.5000000 40.5375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral