メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.410672078425 43.7547491683197, 142.411403783419 43.754721444185, 142.411509078119 43.7556925436195, 142.410772116745 43.7557317215396, 142.408161170971 43.7558765324899, 142.407480840154 43.7559122538299, 142.407434040866 43.7555102361725, 142.407416326319 43.7552988380704, 142.407375338089 43.7549341186829, 142.408090117362 43.7548882236541, 142.409616675223 43.7548059746203, 142.410649804776 43.75475037666, 142.410672078425 43.7547491683197)) ^^http://www.opengis.net/ont/geosparql#wktLiteral