メタデータ名 G20503213843
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7437500 42.7916667, 141.7500000 42.7916667, 141.7500000 42.7958334, 141.7437500 42.7958334, 141.7437500 42.7916667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral