メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.382736477125 43.0337001968728, 141.383275096107 43.0341831548937, 141.382885391507 43.0341752812272, 141.382880169748 43.0345463758363, 141.382425308563 43.0348013243774, 141.381930602315 43.0350872664107, 141.380989176379 43.0341997993684, 141.380948767958 43.0341555362905, 141.380984620552 43.0341558083793, 141.380992118436 43.0336240968762, 141.381822837658 43.033637993283, 141.381901655011 43.0336235407721, 141.382349915498 43.0333535634828, 141.382736477125 43.0337001968728)) ^^http://www.opengis.net/ont/geosparql#wktLiteral