メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.378663091762 43.0755796306838, 141.378658168173 43.0759273005599, 141.377939052952 43.075538392426, 141.377149591062 43.0751114575518, 141.377470069509 43.0748037483878, 141.377532270273 43.0747337517926, 141.377935951916 43.0743223072433, 141.37877963207 43.0747886115061, 141.378693901906 43.075266970804, 141.378663091762 43.0755796306838)) ^^http://www.opengis.net/ont/geosparql#wktLiteral