メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.6437500 34.4791667, 132.6500000 34.4791667, 132.6500000 34.4833333, 132.6437500 34.4833333, 132.6437500 34.4791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral