メタデータ名 indicator-C1406
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.9812500 38.5416667, 140.9875000 38.5416667, 140.9875000 38.5458334, 140.9812500 38.5458334, 140.9812500 38.5416667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral