メタデータ名 indicator-C312001
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.4062500 35.3666667, 139.4125000 35.3666667, 139.4125000 35.3708334, 139.4062500 35.3708334, 139.4062500 35.3666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral