メタデータ名 indicator-C220821
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.1250000 43.8041667, 144.1312500 43.8041667, 144.1312500 43.8083333, 144.1250000 43.8083333, 144.1250000 43.8041667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral