メタデータ名 indicator-C220708
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.0562500 31.9291667, 131.0625000 31.9291667, 131.0625000 31.9333333, 131.0562500 31.9333333, 131.0562500 31.9291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral