メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.15678641031 34.6668679928656, 135.156003005883 34.6676395514872, 135.15542754264 34.6672787598805, 135.155023180067 34.6670309077101, 135.155806207906 34.6662210447792, 135.15678641031 34.6668679928656)) ^^http://www.opengis.net/ont/geosparql#wktLiteral