メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.429964813459 43.0566875934972, 141.430565358467 43.0568480239643, 141.431688306373 43.0570597265487, 141.431760357115 43.0580108925393, 141.431767928439 43.0580762840554, 141.431816986885 43.0590184237826, 141.431844817387 43.0594793549554, 141.431890729846 43.060102455657, 141.430803411328 43.0601357596549, 141.430221494726 43.0601370134393, 141.429779947003 43.0601490447397, 141.429768753047 43.0601469246956, 141.429745613381 43.060098371929, 141.429682016459 43.059083475026, 141.429608378828 43.0580663958453, 141.429512188615 43.0565753416468, 141.429896492601 43.0566613642774, 141.429964813459 43.0566875934972)) ^^http://www.opengis.net/ont/geosparql#wktLiteral