メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.659478317292 43.9377044490227, 141.660001540305 43.9380806028801, 141.659590686527 43.938380602835, 141.65909227417 43.9387219997614, 141.65897260918 43.9388172005485, 141.658651581838 43.9390516430325, 141.657989054337 43.939508673079, 141.656845047613 43.940303116279, 141.656326745214 43.9399065756301, 141.655783523766 43.9394967486196, 141.656337151699 43.9390908298652, 141.656888102885 43.9387185737893, 141.657257706307 43.9384534721229, 141.657905350684 43.9380050311238, 141.658022589593 43.9379143807529, 141.658904622176 43.9372913897857, 141.659478317292 43.9377044490227)) ^^http://www.opengis.net/ont/geosparql#wktLiteral