メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.0875000 42.7083333, 143.0937500 42.7083333, 143.0937500 42.7125000, 143.0875000 42.7125000, 143.0875000 42.7083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral