メタデータ名 C18400-19700401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.5937500 37.5875000, 140.6000000 37.5875000, 140.6000000 37.5916667, 140.5937500 37.5916667, 140.5937500 37.5875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral