メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.870350642282 35.4628112455746, 136.870376999015 35.4631499086519, 136.869886399021 35.4631738047349, 136.868797770161 35.4632405162564, 136.868720706441 35.4622361515732, 136.869128550434 35.4622145911644, 136.870293758171 35.4621572542169, 136.870329305002 35.4624951304951, 136.870350642282 35.4628112455746)) ^^http://www.opengis.net/ont/geosparql#wktLiteral