メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.006198404822 34.8931585208608, 137.006129651611 34.8933111174092, 137.006047506039 34.8933560823207, 137.005924397438 34.8933671874036, 137.005751171777 34.8933263907971, 137.004134215343 34.8928161622569, 137.003168655129 34.8925072310954, 137.003288115767 34.8923522395029, 137.004143201877 34.8919972366291, 137.004883700534 34.8917081365194, 137.005152377769 34.8915850356397, 137.0052168887 34.8916512534151, 137.005422971206 34.8919069714565, 137.006198404822 34.8931585208608)) ^^http://www.opengis.net/ont/geosparql#wktLiteral