メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.7000000 32.8625000, 132.7062500 32.8625000, 132.7062500 32.8666667, 132.7000000 32.8666667, 132.7000000 32.8625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral