メタデータ名 C1021
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.2312500 39.2250000, 141.2375000 39.2250000, 141.2375000 39.2291667, 141.2312500 39.2291667, 141.2312500 39.2250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral