メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.912332246861 43.5123936965936, 141.912480721521 43.5128960162264, 141.912545989317 43.5131166812442, 141.91214342855 43.51318349782, 141.912037426914 43.5132010827019, 141.911541776559 43.5132833390838, 141.91132372999 43.512546202765, 141.911207731326 43.5121425382911, 141.91105880116 43.5116243204168, 141.911583679892 43.5115444381222, 141.911619605906 43.5115389886347, 141.91205389242 43.5114729371951, 141.912332246861 43.5123936965936)) ^^http://www.opengis.net/ont/geosparql#wktLiteral