メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.360789604911 43.0991121345975, 141.360668016505 43.0996081196052, 141.360142112535 43.099546437435, 141.359674604754 43.0994883708757, 141.35908995929 43.099413989908, 141.359093234118 43.0994065609473, 141.359161776121 43.099068258041, 141.359210744593 43.098894790655, 141.359250290066 43.0986961438015, 141.359365178182 43.098285553748, 141.36093482238 43.0985019809764, 141.360834294878 43.0989024859358, 141.360789604911 43.0991121345975)) ^^http://www.opengis.net/ont/geosparql#wktLiteral