メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.607427987807 35.4274133247638, 139.607334354644 35.4275232859856, 139.607148775102 35.4277470809321, 139.606632250309 35.4274428103191, 139.606844021644 35.4271671305087, 139.606925808918 35.4272265433385, 139.60715035686 35.4270197921327, 139.607319783777 35.4270828543529, 139.607427987807 35.4274133247638)) ^^http://www.opengis.net/ont/geosparql#wktLiteral