メタデータ名 indicator-H1610
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.1437500 43.8916667, 144.1500000 43.8916667, 144.1500000 43.8958334, 144.1437500 43.8958334, 144.1437500 43.8916667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral