メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.2562500 41.2625000, 141.2625000 41.2625000, 141.2625000 41.2666667, 141.2562500 41.2666667, 141.2562500 41.2625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral