メタデータ名 indicator-H3411
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.5187500 42.9875000, 140.5250000 42.9875000, 140.5250000 42.9916667, 140.5187500 42.9916667, 140.5187500 42.9875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral