メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.794905156616 35.2655899852856, 136.795736084716 35.2656002929652, 136.795594279796 35.2685919509112, 136.791252326416 35.2684121601142, 136.791171070887 35.2670405063943, 136.790052437723 35.2670463796217, 136.789962310173 35.2670480700657, 136.789965646047 35.2668024480261, 136.790004270523 35.2654982097461, 136.7905994305 35.2655125340502, 136.794449539015 35.2655826621904, 136.794905156616 35.2655899852856)) ^^http://www.opengis.net/ont/geosparql#wktLiteral