メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.343999539449 37.3030520596938, 140.344050256579 37.3034098886491, 140.34391308798 37.3035205848313, 140.343051002872 37.3034967058909, 140.343015757797 37.3033867555801, 140.342800599379 37.3031784571775, 140.342923420713 37.3029851765468, 140.343150947354 37.3026271295541, 140.34377255221 37.3026061471834, 140.343999539449 37.3030520596938)) ^^http://www.opengis.net/ont/geosparql#wktLiteral