メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.8125000 33.1125000, 132.8187500 33.1125000, 132.8187500 33.1166667, 132.8125000 33.1166667, 132.8125000 33.1125000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral