メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.369761203633 34.9386668019535, 138.370678856734 34.9387196113504, 138.370661059802 34.9396454316351, 138.370660434561 34.9396694470721, 138.37066789191 34.9399267258791, 138.370638566508 34.9404901143834, 138.370608267074 34.94088996951, 138.370582600382 34.9410395297351, 138.369802154746 34.9410017966366, 138.368836873204 34.940953647381, 138.367156375852 34.9408717549142, 138.366560874774 34.9408450476958, 138.36663533179 34.9399633781611, 138.366739581083 34.9385284632283, 138.367344879127 34.9385474327052, 138.368990277626 34.9386266086223, 138.369761203633 34.9386668019535)) ^^http://www.opengis.net/ont/geosparql#wktLiteral