メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.372007071561 43.1022861919248, 141.372555314605 43.1023592413638, 141.373196013272 43.1024372159492, 141.373007113542 43.1032369883925, 141.372472807493 43.103161938037, 141.372352114064 43.1031449795868, 141.371987450998 43.1030937299147, 141.371818647126 43.1030717608644, 141.371300775113 43.1030021753756, 141.371486051225 43.1022223494755, 141.371986093154 43.1022833585246, 141.372007071561 43.1022861919248)) ^^http://www.opengis.net/ont/geosparql#wktLiteral