メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.1187500 33.6208334, 131.1250000 33.6208334, 131.1250000 33.6250000, 131.1187500 33.6250000, 131.1187500 33.6208334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral