メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.40261968925 44.162136359121, 142.401332967274 44.1619241427085, 142.401081278904 44.161878996556, 142.401101975317 44.1618031840282, 142.401155150349 44.1616553074671, 142.401217108706 44.1614463824523, 142.401487442801 44.1603905967865, 142.403094163815 44.1606370505927, 142.40261968925 44.162136359121)) ^^http://www.opengis.net/ont/geosparql#wktLiteral