メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.888486327667 35.2420375458301, 136.888484807435 35.2421677559494, 136.88770071999 35.2420434766049, 136.887702889306 35.2414143848987, 136.886800816341 35.2414287020874, 136.886795743833 35.2394951326374, 136.886756703585 35.2378586730142, 136.888431402117 35.2378355772991, 136.88842134587 35.2380265437616, 136.888434335914 35.2383488335908, 136.888445278488 35.2392728205545, 136.88845712131 35.2402718107939, 136.888470752795 35.2407572041683, 136.888486327667 35.2420375458301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral