メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.580408785847 43.3321361912949, 145.5798397206 43.3319612947599, 145.579357347589 43.3318285220752, 145.57940157557 43.3317846903692, 145.580410948954 43.3309999864538, 145.581503269362 43.3301894386464, 145.582846141796 43.3291631508137, 145.581959776252 43.3302229637305, 145.581320256296 43.3309920494823, 145.581124469312 43.3312376135554, 145.580408785847 43.3321361912949)) ^^http://www.opengis.net/ont/geosparql#wktLiteral