メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.904291751857 43.4752381223378, 141.904295513119 43.47525170615, 141.904345728634 43.4754325906896, 141.904584311749 43.4762640505116, 141.903227780422 43.4764807845643, 141.90277173709 43.4765479041091, 141.902475122405 43.4755478387208, 141.902466510719 43.4755255546189, 141.90218578424 43.4745813395697, 141.902691271102 43.474498794462, 141.90400103971 43.4743043232107, 141.904155253326 43.4747463544497, 141.904291751857 43.4752381223378)) ^^http://www.opengis.net/ont/geosparql#wktLiteral