メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.898483305935 43.1065377231898, 142.897355917796 43.1063616656103, 142.895213641191 43.1059808252629, 142.895236352405 43.1058904634818, 142.895260813562 43.1057931304116, 142.895643755019 43.1043195991229, 142.898995602864 43.1048955729523, 142.8989553734 43.1050534100863, 142.898870934778 43.1053148126218, 142.898730353903 43.1057681814606, 142.898612116107 43.1062693891902, 142.898533279689 43.1063709693123, 142.898521873786 43.1064133731544, 142.898483305935 43.1065377231898)) ^^http://www.opengis.net/ont/geosparql#wktLiteral