メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.294908472302 43.0722416042622, 141.295344992941 43.0726042048568, 141.29479870694 43.072909939075, 141.294421251347 43.0731234017592, 141.294039703218 43.073328459826, 141.293520482092 43.0736140182167, 141.292548526366 43.0728532310712, 141.292371778296 43.0727140480032, 141.292903075414 43.0724290882412, 141.293281214818 43.0722086739934, 141.294208825052 43.0716810089444, 141.294233698752 43.0717039325819, 141.294847195434 43.0721906667239, 141.294857424268 43.072199191558, 141.294908472302 43.0722416042622)) ^^http://www.opengis.net/ont/geosparql#wktLiteral