メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.926922116547 35.1830106843865, 136.926369918396 35.1830911270498, 136.92571384511 35.183191711425, 136.924778920873 35.1833303222594, 136.924306145341 35.1834623950495, 136.924180113756 35.1834916468836, 136.924089288559 35.1832218890071, 136.924355630317 35.1831563176305, 136.924302154975 35.1829696028571, 136.924446765902 35.1829402325809, 136.924438784862 35.1829156263, 136.92460253541 35.182886942609, 136.924633152127 35.1829963692955, 136.924655243226 35.1830815536742, 136.924704568134 35.1831241180488, 136.925524663412 35.1829967566169, 136.926311941315 35.1828715074016, 136.926875076354 35.1827910158488, 136.926922116547 35.1830106843865)) ^^http://www.opengis.net/ont/geosparql#wktLiteral