メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5500000 32.7125000, 132.5562500 32.7125000, 132.5562500 32.7166667, 132.5500000 32.7166667, 132.5500000 32.7125000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral