メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.0375000 33.4708334, 130.0437500 33.4708334, 130.0437500 33.4750000, 130.0375000 33.4750000, 130.0375000 33.4708334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral