メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5187500 32.9958334, 132.5250000 32.9958334, 132.5250000 33.0000000, 132.5187500 33.0000000, 132.5187500 32.9958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral