メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.748422095514 43.1908854658338, 141.748499644532 43.1914750167163, 141.748537442577 43.1918128985084, 141.748577527804 43.1921708341692, 141.748581136466 43.1922114292808, 141.748445141066 43.1921511252435, 141.748049555896 43.1919757513867, 141.747437437015 43.1917043422445, 141.747113171535 43.1915358898705, 141.746573709466 43.1912663422719, 141.746107070896 43.1910193365719, 141.74666014662 43.1904379725254, 141.747067202905 43.1900100543737, 141.747505906504 43.1895488681758, 141.748300568552 43.1899619449917, 141.748422095514 43.1908854658338)) ^^http://www.opengis.net/ont/geosparql#wktLiteral