メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.083858701046 43.5389720592689, 142.083564712095 43.5389578032943, 142.082763404427 43.5388979569714, 142.082912535702 43.5379031958145, 142.08295721703 43.5375305791191, 142.083807510621 43.5374377864856, 142.084075877816 43.537405239032, 142.083946695755 43.5383371618009, 142.083709183195 43.5383229198071, 142.083671391745 43.5385624228005, 142.083912991121 43.5385803291362, 142.083858701046 43.5389720592689)) ^^http://www.opengis.net/ont/geosparql#wktLiteral