メタデータ名 S28102021001
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7625000 42.9458334, 141.7687500 42.9458334, 141.7687500 42.9500000, 141.7625000 42.9500000, 141.7625000 42.9458334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral