メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.3125000 42.5458334, 141.3187500 42.5458334, 141.3187500 42.5500000, 141.3125000 42.5500000, 141.3125000 42.5458334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral