メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.403632923596 38.0645958716145, 139.403556917808 38.0643298268693, 139.403331659031 38.0633573860489, 139.403082419414 38.0623890696033, 139.404505363334 38.062136703222, 139.405835477662 38.0619016449636, 139.40598050591 38.0618368978116, 139.406068187625 38.0619805176961, 139.406324223182 38.0623630039306, 139.406565112084 38.0627153410282, 139.406814502642 38.0630926679538, 139.407053787036 38.0634516330625, 139.407377395769 38.063948609542, 139.405921931577 38.0642083014366, 139.403632923596 38.0645958716145)) ^^http://www.opengis.net/ont/geosparql#wktLiteral