メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.306354871431 43.1087187042178, 141.307046266092 43.1093941313554, 141.306670008752 43.1096117231498, 141.305777772791 43.1101061642426, 141.305272137966 43.1103844337027, 141.304892478383 43.1105915136361, 141.304577918987 43.1102920628743, 141.304191120326 43.1099091684071, 141.30377752573 43.1095274581472, 141.303501017989 43.1092323268891, 141.30386769695 43.1090451883204, 141.304206322286 43.1088470569357, 141.304566513353 43.1086570495693, 141.30529080504 43.1082721406816, 141.30566232941 43.1080562725579, 141.305742914659 43.10802170301, 141.306408640073 43.1086801846617, 141.306354871431 43.1087187042178)) ^^http://www.opengis.net/ont/geosparql#wktLiteral