メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.279270246542 43.0821373958191, 141.279639643631 43.0824657985844, 141.28003499408 43.0828036335339, 141.281021383735 43.0836780860493, 141.280734221537 43.0838473297205, 141.280297021786 43.0841119350807, 141.279345005025 43.0832606240417, 141.279314033239 43.0832350430498, 141.27892139833 43.0828893526589, 141.278556659809 43.0825576814962, 141.278108572982 43.0821575750905, 141.278766023763 43.0817801389914, 141.278829465648 43.081748466411, 141.279270246542 43.0821373958191)) ^^http://www.opengis.net/ont/geosparql#wktLiteral