メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9250000 32.9541667, 132.9312500 32.9541667, 132.9312500 32.9583333, 132.9250000 32.9583333, 132.9250000 32.9541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral