メタデータ名 S182021270
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5437500 42.9166667, 141.5500000 42.9166667, 141.5500000 42.9208334, 141.5437500 42.9208334, 141.5437500 42.9166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral