メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.1500000 42.0125000, 143.1562500 42.0125000, 143.1562500 42.0166667, 143.1500000 42.0166667, 143.1500000 42.0125000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral