メタデータ名 indicator-C210835
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.9687500 36.1208334, 137.9750000 36.1208334, 137.9750000 36.1250000, 137.9687500 36.1250000, 137.9687500 36.1208334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral