メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.920220075841 43.5399513841285, 141.920145715952 43.5393754958179, 141.920705191339 43.5392583959722, 141.920888987344 43.5407129837082, 141.920928481892 43.540947523409, 141.92097695851 43.5410366928609, 141.921074278884 43.5411437957028, 141.920797672121 43.5417483534462, 141.919675327363 43.5411041543363, 141.91922798483 43.5408565539172, 141.919022859864 43.5407402783147, 141.920003906055 43.5398308244276, 141.920220075841 43.5399513841285)) ^^http://www.opengis.net/ont/geosparql#wktLiteral