メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.3375000 32.0541667, 130.3437500 32.0541667, 130.3437500 32.0583333, 130.3375000 32.0583333, 130.3375000 32.0541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral