メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.170778039601 36.7579922452085, 137.170341497972 36.7579753634734, 137.170141642137 36.7579753701524, 137.169915476236 36.7579796021281, 137.169720843058 36.7573405296435, 137.17030465139 36.7572812302528, 137.170294119697 36.7572008255895, 137.170741169588 36.7571542715702, 137.170720160912 36.757539394613, 137.170746462825 36.7576706299107, 137.170778039601 36.7579922452085)) ^^http://www.opengis.net/ont/geosparql#wktLiteral