メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.445098543933 43.8064184898776, 142.447147510102 43.8077154152516, 142.447179461698 43.8077349614259, 142.445876194373 43.8088289939197, 142.445510445909 43.8091438094621, 142.445323114034 43.8092965663921, 142.444496010635 43.8087897391424, 142.443178695975 43.8079824695315, 142.443349485732 43.80783714468, 142.443810041151 43.8074469686608, 142.443305124046 43.8071305566682, 142.443442006135 43.8070176726233, 142.444395234043 43.8062214212235, 142.444564209406 43.80608026493, 142.445098543933 43.8064184898776)) ^^http://www.opengis.net/ont/geosparql#wktLiteral