メタデータ名 indicator-K310203
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.4250000 36.9083333, 137.4312500 36.9083333, 137.4312500 36.9125000, 137.4250000 36.9125000, 137.4250000 36.9083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral