メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.3062500 33.9125000, 132.3125000 33.9125000, 132.3125000 33.9166667, 132.3062500 33.9166667, 132.3062500 33.9125000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral