CREATE TABLE table_15171 ("Stage" CLOB, "Date" CLOB, "Course" CLOB, "Distance" CLOB, "Winner" CLOB, "Race Leader" CLOB)

Who's the race leader of Cuneo to Turin?
SELECT "Race Leader" FROM table_15171 WHERE "Course" = 'cuneo to turin'
SELECT "Race Leader" FROM "table_15171" WHERE "Course" = 'cuneo to turin'