メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.04775525513 42.9041518614234, 143.048489740015 42.9042018873712, 143.048294653367 42.9054526440075, 143.048248729043 42.9057377426776, 143.047524118041 42.9056794886915, 143.046712358353 42.9056218351302, 143.046823331761 42.9045191539479, 143.046887100531 42.9040966411962, 143.046939092963 42.9041000067472, 143.047168128895 42.9041148724339, 143.04775525513 42.9041518614234)) ^^http://www.opengis.net/ont/geosparql#wktLiteral