メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.30021570744 43.0763770903332, 141.299035848241 43.0770667812344, 141.299034202417 43.077067752385, 141.298566758624 43.0766232562485, 141.298683440736 43.0765536860031, 141.298474986229 43.0763602368777, 141.29828253431 43.076168185269, 141.299334481015 43.0755728048433, 141.299437881948 43.0756671308622, 141.299827074887 43.0760224300133, 141.30021570744 43.0763770903332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral