メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.384122168137 43.7570720711752, 142.384419772862 43.7575795520173, 142.383035595842 43.7579797225122, 142.382741770053 43.7574552514211, 142.38286635675 43.7574178906158, 142.382685969054 43.7570991909746, 142.382374508828 43.7571872397157, 142.382231055271 43.7569801140584, 142.382514087632 43.756891271206, 142.383367419154 43.7566434567695, 142.383806970144 43.7565041319966, 142.383917558947 43.7567210165259, 142.384122168137 43.7570720711752)) ^^http://www.opengis.net/ont/geosparql#wktLiteral