メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.334982733439 43.0973849818247, 141.334913252791 43.0975975197168, 141.334751621844 43.0981719338198, 141.334724260371 43.0982950001308, 141.334075306966 43.0980882404776, 141.332938868228 43.0977816368186, 141.332748262816 43.0975633553275, 141.333710634873 43.0971728775541, 141.334264780813 43.0969531118414, 141.334767748072 43.0967478434116, 141.335186000137 43.0965662991797, 141.334982733439 43.0973849818247)) ^^http://www.opengis.net/ont/geosparql#wktLiteral