メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.313609602677 42.2889208702292, 143.314196582406 42.2891637232559, 143.313477448538 42.2900697284561, 143.313456129824 42.290097779304, 143.312900610635 42.2898615241854, 143.312209321746 42.2895675792036, 143.312230749528 42.2895405125292, 143.312935787948 42.2886293002559, 143.313405163606 42.2888361077555, 143.313609602677 42.2889208702292)) ^^http://www.opengis.net/ont/geosparql#wktLiteral