メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.970195053709 43.5396093674679, 144.969463495805 43.5391539255729, 144.969283296939 43.5390418022589, 144.969107828512 43.5389230980984, 144.969541049806 43.5385445614516, 144.969850058552 43.5382971029947, 144.970185156822 43.5385219490676, 144.970607520904 43.5387956631801, 144.970884435297 43.5389690139761, 144.970588511944 43.5392107847256, 144.970620857933 43.5392421850513, 144.970555167693 43.539298914284, 144.970195053709 43.5396093674679)) ^^http://www.opengis.net/ont/geosparql#wktLiteral