メタデータ名 indicator-C210904
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.7000000 37.5083333, 140.7062500 37.5083333, 140.7062500 37.5125000, 140.7000000 37.5125000, 140.7000000 37.5083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral