メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.8187500 34.0208334, 132.8250000 34.0208334, 132.8250000 34.0250000, 132.8187500 34.0250000, 132.8187500 34.0208334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral