メタデータ名 G20503475431
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.6187500 37.7000000, 139.6250000 37.7000000, 139.6250000 37.7041667, 139.6187500 37.7041667, 139.6187500 37.7000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral