メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9937500 33.0166667, 133.0000000 33.0166667, 133.0000000 33.0208334, 132.9937500 33.0208334, 132.9937500 33.0166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral