メタデータ名 G20492917993
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5625000 38.7250000, 141.5687500 38.7250000, 141.5687500 38.7291667, 141.5625000 38.7291667, 141.5625000 38.7250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral