メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.1937500 43.9333333, 144.2000000 43.9333333, 144.2000000 43.9375000, 144.1937500 43.9375000, 144.1937500 43.9333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral