メタデータ名 G20473123103
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.1312500 42.7875000, 142.1375000 42.7875000, 142.1375000 42.7916667, 142.1312500 42.7916667, 142.1312500 42.7875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral