メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.4062500 33.0625000, 132.4125000 33.0625000, 132.4125000 33.0666667, 132.4062500 33.0666667, 132.4062500 33.0625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral