CREATE TABLE table_66931 ("Stage" TEXT, "Time  ( EEST ) " TEXT, "Name" TEXT, "Length" TEXT, "Winner" TEXT, "Time" TEXT, "Avg. spd." TEXT, "Rally leader" TEXT)

What is the Stage, when the Rally leader is C. Atkinson?
SELECT "Stage" FROM table_66931 WHERE "Rally leader" = 'c. atkinson'
SELECT "Stage" FROM "table_66931" WHERE "Rally leader" = 'c. atkinson'