メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.85224551635 35.2588798256391, 136.851541359189 35.2588779784032, 136.851578146565 35.2567608092626, 136.851580410572 35.2561760229281, 136.852918272971 35.256188537378, 136.85291775894 35.2571786140679, 136.852899089686 35.2588797760492, 136.85224551635 35.2588798256391)) ^^http://www.opengis.net/ont/geosparql#wktLiteral