メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.319667079017 43.1138690622329, 141.32035425872 43.1145382472398, 141.320262936794 43.1145844841073, 141.319816971092 43.1148226484551, 141.319641023502 43.1149165827658, 141.319516447787 43.1149779512603, 141.319373991761 43.1150535917854, 141.318520705506 43.1155063165246, 141.318176179028 43.1151450567026, 141.317838414137 43.1148065667685, 141.317526919981 43.1144831289757, 141.317164660544 43.1141208772999, 141.318011420175 43.1136801367096, 141.318450757566 43.1134548666474, 141.318990070521 43.1131695038864, 141.319667079017 43.1138690622329)) ^^http://www.opengis.net/ont/geosparql#wktLiteral