メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.804711250984 37.5714413089798, 139.805331926383 37.5728402455273, 139.805346491477 37.5730969157912, 139.802652681339 37.5730904551672, 139.802377994555 37.5726498388906, 139.802438471007 37.5726163476077, 139.802207759754 37.5721962980532, 139.802030203308 37.5717221976962, 139.801839802503 37.5713194751714, 139.801719006661 37.5709577434865, 139.801982902036 37.5709316285005, 139.803124551743 37.5708720969068, 139.803083859405 37.571793861062, 139.803098411774 37.5720623593308, 139.803167963449 37.5722606149025, 139.804711250984 37.5714413089798)) ^^http://www.opengis.net/ont/geosparql#wktLiteral