メタデータ名 C15217-19700401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.2000000 40.7666667, 141.2062500 40.7666667, 141.2062500 40.7708334, 141.2000000 40.7708334, 141.2000000 40.7666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral