メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.321487297005 43.054096209905, 141.321580018018 43.0540274778309, 141.322223858527 43.0541201208805, 141.32210288604 43.0546438665187, 141.322054210788 43.0548251309923, 141.32196929986 43.0551832606134, 141.321264399992 43.0550877995567, 141.320809791295 43.0550191243243, 141.320626652243 43.054997453357, 141.320632635736 43.0549695809611, 141.320765015876 43.0544218072187, 141.320891472352 43.0539168163796, 141.320992908748 43.0539250946096, 141.32115739049 43.0539690495301, 141.321324874055 43.0540174594592, 141.321487297005 43.054096209905)) ^^http://www.opengis.net/ont/geosparql#wktLiteral