I'd guess opener would bid 3N with nothing interesting and a S stopper. But there was no agreement on 3S. So it is possible opener may have avoided 3S because of that.
You have: Qx AKx Kxxx Qxxx Playing 2/1 gf, opps silent throughout. Partner opens 1D, you bid 2D (inverted minor raise). Partner continues 3C, you bid 3H. Now partner bids 5C. What does it mean and what do you bid? [hv=pc=n&s=sq2haktdk985cq853&d=n&v=e&b=9&a=1dp2d(Inverted)p3cp3hp5cp]133|200[/hv]