メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.286805270893 43.0693722759505, 141.286819914662 43.0691661933727, 141.287569635996 43.0692976172846, 141.287441491337 43.0696643616321, 141.28730574592 43.0698609149452, 141.287289159841 43.0698848282443, 141.287083742918 43.0701259463567, 141.28665530735 43.0705129500846, 141.286632924668 43.0705271786112, 141.286553946647 43.0704677891923, 141.286306299636 43.0702815112592, 141.286001767582 43.0700525569309, 141.286179483561 43.0700244447961, 141.286548442395 43.0695396073283, 141.286284035399 43.0695110074438, 141.286268424783 43.069509329415, 141.286240058937 43.0691954215243, 141.286477952682 43.0691834993163, 141.286805270893 43.0693722759505)) ^^http://www.opengis.net/ont/geosparql#wktLiteral