CREATE TABLE table_203_408 (id DECIMAL, "rd." DECIMAL, "grand prix" TEXT, "date" TEXT, "location" TEXT, "pole position" TEXT, "fastest lap" TEXT, "winning driver" TEXT, "constructor" TEXT, "report" TEXT)

who was the winning driver after nigel mansell ?
SELECT "winning driver" FROM table_203_408 WHERE "rd." > (SELECT "rd." FROM table_203_408 WHERE "winning driver" = 'nigel mansell') ORDER BY "rd." LIMIT 1
SELECT "winning driver" FROM "table_203_408" WHERE "rd." > (SELECT "rd." FROM "table_203_408" WHERE "winning driver" = 'nigel mansell') ORDER BY "rd." NULLS FIRST LIMIT 1