メタデータ名 age-23
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.9437500 36.3666667, 139.9500000 36.3666667, 139.9500000 36.3708334, 139.9437500 36.3708334, 139.9437500 36.3666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral