メタデータ名 indicator-C3706
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.9625000 37.1375000, 136.9687500 37.1375000, 136.9687500 37.1416667, 136.9625000 37.1416667, 136.9625000 37.1375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral