メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.282589389951 43.1526822628501, 141.283015798841 43.1529975661402, 141.283414142082 43.1532960335906, 141.283846096294 43.153619679581, 141.284367774909 43.1540105367583, 141.282745857462 43.1551791839016, 141.282221271129 43.1547903287225, 141.281371061683 43.1541701446066, 141.280527158268 43.1535167439951, 141.280909889875 43.1532525316082, 141.282163181361 43.152354512267, 141.282589389951 43.1526822628501)) ^^http://www.opengis.net/ont/geosparql#wktLiteral