メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.926814360692 43.4976006487141, 141.926938871217 43.4980168473443, 141.926285302013 43.4981180585819, 141.925247789503 43.4982787274883, 141.924646908693 43.4983717799745, 141.924219215672 43.4984380031927, 141.923505691017 43.4985484864824, 141.923446854521 43.4983531607783, 141.923387878012 43.4981572720569, 141.923313123886 43.4979091562789, 141.923201409603 43.4975381783463, 141.924942708355 43.4972729190897, 141.926638985633 43.4970144664251, 141.926814360692 43.4976006487141)) ^^http://www.opengis.net/ont/geosparql#wktLiteral