メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.1000000 34.0166667, 132.1062500 34.0166667, 132.1062500 34.0208334, 132.1000000 34.0208334, 132.1000000 34.0166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral