メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.418948971082 43.0170449518338, 144.419049143999 43.0170972058311, 144.419829246602 43.0176290081134, 144.420237518316 43.0178788085882, 144.420382886574 43.0179678299403, 144.420405852465 43.0179776620879, 144.419428058537 43.0193690750579, 144.418774701099 43.0191327073341, 144.418768520115 43.0191476642486, 144.418485412765 43.0195287910537, 144.417378596284 43.0188154624436, 144.41613791633 43.0180231449056, 144.416524069548 43.0176993586064, 144.417604276178 43.0168036716083, 144.418070998583 43.0164713221191, 144.418948971082 43.0170449518338)) ^^http://www.opengis.net/ont/geosparql#wktLiteral