メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.911968902383 34.8904959419775, 136.912074285376 34.8910389979498, 136.9123061025 34.8920492951742, 136.912340024445 34.8924484461866, 136.911347589973 34.8924923030089, 136.909319935407 34.8926173761202, 136.908580650419 34.8926592788027, 136.90831947315 34.8910521144965, 136.909737360793 34.890995858911, 136.911104279723 34.8909468867547, 136.91110162148 34.8907078973178, 136.91128969334 34.8905193157207, 136.911968902383 34.8904959419775)) ^^http://www.opengis.net/ont/geosparql#wktLiteral