メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.408837008046 43.031120101615, 141.40900398 43.0312205642141, 141.409481659588 43.0315316978561, 141.410172949374 43.0320318975724, 141.41069296098 43.0325018620983, 141.411181434148 43.0330284194848, 141.410634847307 43.0332557320869, 141.409776582986 43.0336234570149, 141.409342555377 43.0332595458774, 141.40889892531 43.032876150817, 141.408393463441 43.0324858301934, 141.408287604097 43.032438142096, 141.407663467115 43.0322229129084, 141.40700518324 43.0320722745848, 141.407188638599 43.0317036154933, 141.407436147729 43.0312286641559, 141.407867854981 43.0306385296626, 141.408424188032 43.0308967227917, 141.408837008046 43.031120101615)) ^^http://www.opengis.net/ont/geosparql#wktLiteral