メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.088255755883 35.1371838118914, 136.0874489857 35.1367624212005, 136.088211461268 35.1358004655447, 136.08861933024 35.1360315082963, 136.089025907942 35.1362385349998, 136.088255755883 35.1371838118914)) ^^http://www.opengis.net/ont/geosparql#wktLiteral