メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.744346593981 43.1833396464968, 141.742637142134 43.1851155652717, 141.741376004975 43.1864549444621, 141.737567230491 43.1845269991234, 141.738574274887 43.1841192291384, 141.739663741287 43.1836909977393, 141.740239407872 43.1834661166407, 141.740554891577 43.1833829824779, 141.7410978729 43.1832512770668, 141.741547020013 43.1831467938473, 141.741834172279 43.1831189503626, 141.742189001096 43.1830942913114, 141.74259969049 43.1830669240613, 141.743001848154 43.1831007743411, 141.743368113089 43.1831403023645, 141.744070648294 43.1832323717922, 141.744346593981 43.1833396464968)) ^^http://www.opengis.net/ont/geosparql#wktLiteral