メタデータ名 indicator-C220723
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.4437500 33.5750000, 135.4500000 33.5750000, 135.4500000 33.5791667, 135.4437500 33.5791667, 135.4437500 33.5750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral