メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.7625000 35.0625000, 132.7687500 35.0625000, 132.7687500 35.0666667, 132.7625000 35.0666667, 132.7625000 35.0625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral