This question may be has no sense at IMPs. But at MPs it has sense. You are S.
W started with 8 of diamonds. Since E entered with the queen, it appears that the first lead was from the second high spot.
You won with the ace to hide (for W) the fact who has the king.
You played the queen of clubs and W followed with the small of diamonds. For the second club W followed with the 6 of hearts.
You won. Do you cash another high club?
Plus... it's free!