メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.4375000 32.9541667, 130.4437500 32.9541667, 130.4437500 32.9583333, 130.4375000 32.9583333, 130.4375000 32.9541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral