メタデータ名 G20584166991
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.0250000 38.8291667, 141.0312500 38.8291667, 141.0312500 38.8333333, 141.0250000 38.8333333, 141.0250000 38.8291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral