メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.3750000 33.9166667, 132.3812500 33.9166667, 132.3812500 33.9208334, 132.3750000 33.9208334, 132.3750000 33.9166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral