メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.283676086152 43.0913150310068, 141.283909084716 43.0911742288579, 141.284104688197 43.0910559684425, 141.284567334091 43.0914643318775, 141.284835398676 43.0917121798477, 141.285301993021 43.0921263411758, 141.285574586528 43.0923611445871, 141.284308227719 43.093139420247, 141.283175341747 43.0928604317173, 141.282553219987 43.0927010880313, 141.281721354018 43.0925154238511, 141.28269943086 43.0919224461328, 141.282874478024 43.0918118904897, 141.283059509166 43.0916948779326, 141.283300517086 43.0915576614963, 141.283676086152 43.0913150310068)) ^^http://www.opengis.net/ont/geosparql#wktLiteral