メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.765175583056 43.2043989562959, 141.765711907971 43.2046833133592, 141.765452523179 43.2049571282939, 141.765249662549 43.2051644410651, 141.764808995293 43.2049468078342, 141.764721662621 43.20504257648, 141.764148800313 43.2047650930074, 141.764425694895 43.2044661766318, 141.764704042395 43.2041776738702, 141.764742110557 43.2041358129323, 141.764969501666 43.2042522462679, 141.764936192429 43.2042866170636, 141.765175583056 43.2043989562959)) ^^http://www.opengis.net/ont/geosparql#wktLiteral