メタデータ名 indicator-C210721
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.2937500 33.8625000, 134.3000000 33.8625000, 134.3000000 33.8666667, 134.2937500 33.8666667, 134.2937500 33.8625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral