メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.783408439257 35.1327233812397, 136.78332416396 35.133078403918, 136.783287812297 35.1332690682418, 136.783198296152 35.1337888670256, 136.783004008297 35.1348089787267, 136.781434898695 35.1345856052995, 136.7815668929 35.1339055189982, 136.781764644479 35.1328630990544, 136.781805765571 35.1326613948509, 136.781995652395 35.13173042885, 136.782051024352 35.1315241921444, 136.78209365708 35.1313648171231, 136.783662061863 35.1314721105987, 136.783408439257 35.1327233812397)) ^^http://www.opengis.net/ont/geosparql#wktLiteral