メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.223072704858 36.6915901386961, 137.224017379584 36.6916603773194, 137.225047256578 36.6917454925022, 137.225055322371 36.6917971663124, 137.225031367374 36.6919425648941, 137.225007385505 36.6920621246068, 137.224971365908 36.6921654976174, 137.224950040379 36.6925676632129, 137.224451549603 36.6925169297461, 137.223910417279 36.6924716379411, 137.222890027454 36.6923861566092, 137.222031372369 36.6923112927424, 137.222152244774 36.6918071346945, 137.22223517733 36.6914009998847, 137.223044039655 36.6915836744619, 137.223072704858 36.6915901386961)) ^^http://www.opengis.net/ont/geosparql#wktLiteral