メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.675709138513 32.5978225805877, 131.675860609183 32.5980437027316, 131.676395898443 32.598820484232, 131.676705648435 32.5992655761488, 131.677282423321 32.600122836661, 131.677620608926 32.6006236433243, 131.677065412093 32.6007800495492, 131.676609235337 32.600194379054, 131.67599578261 32.5993899419225, 131.675517502388 32.5987518245941, 131.675153755551 32.5982418481588, 131.674674243896 32.5976098638128, 131.675386559361 32.5973525076853, 131.675709138513 32.5978225805877)) ^^http://www.opengis.net/ont/geosparql#wktLiteral