メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.547260061305 43.2369614883754, 143.547225849952 43.2369630024923, 143.547219396229 43.2368947154429, 143.546978078834 43.2337367423951, 143.546868040404 43.2323583571988, 143.547797162464 43.2336261582241, 143.547682924808 43.2336865331877, 143.547990688204 43.2368508524675, 143.547995638134 43.2369299159406, 143.547260061305 43.2369614883754)) ^^http://www.opengis.net/ont/geosparql#wktLiteral