メタデータ名 G20473140731
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.0250000 37.3291667, 139.0312500 37.3291667, 139.0312500 37.3333333, 139.0250000 37.3333333, 139.0250000 37.3291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral