メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.264421419308 43.0657319773947, 141.26449599322 43.0658011905269, 141.264967181646 43.0662312299656, 141.265193977547 43.0664327758219, 141.265659019969 43.0668458102573, 141.265630271543 43.0668679981372, 141.265345254155 43.0670436205082, 141.265008260422 43.0672481211456, 141.264631868003 43.067480765266, 141.264237477969 43.0677289375599, 141.263328550136 43.0669002245223, 141.262990161607 43.0665993923967, 141.262792747164 43.066408434522, 141.262748905177 43.0663728913638, 141.263231825516 43.0661010141944, 141.26269096298 43.0655842828189, 141.262916878495 43.0654395955079, 141.263245711966 43.0652353114932, 141.263614141281 43.0650141367724, 141.264217644201 43.0655427955186, 141.264421419308 43.0657319773947)) ^^http://www.opengis.net/ont/geosparql#wktLiteral