メタデータ名 C23115-19750201
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5250000 42.9791667, 141.5312500 42.9791667, 141.5312500 42.9833333, 141.5250000 42.9833333, 141.5250000 42.9791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral