メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.891634848204 35.2594403356078, 136.891644159339 35.2603392585515, 136.891647996363 35.2610347989233, 136.890430664707 35.261012674372, 136.889819488134 35.2609950888352, 136.888636663745 35.2609631660663, 136.888630259676 35.2591794798467, 136.88981095651 35.2591466199289, 136.89042868888 35.2591379589493, 136.891631472886 35.2591297781083, 136.891634848204 35.2594403356078)) ^^http://www.opengis.net/ont/geosparql#wktLiteral