72, AT32, KQ3, Q532
Opps are vul and RHO opens with 3D which gets passed out.
You decide to lead the ♠7 and see
Declarer plays the ♠J from dummy, partner wins the ♠Q, declarer playing the ♠T. Partner shifts to the ♣J. Declarer wins the ♣K in hand and plays the ♥7.
How will you defend?
(As usual, Adv/+ please don't spoil it too early).

Help

You lead ♠7. Contract 3♦