メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.1875000 34.2958334, 133.1937500 34.2958334, 133.1937500 34.3000000, 133.1875000 34.3000000, 133.1875000 34.2958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral