I fold it here because...

1) If a Q come, it's highly I am looking at a split pot since any J gives someone a straight here. We can already be behind to QJ here and SB line suggest he may have that.

2) Let's say noone of them have the straight, how would you play the hand if the queen of diamond or 7 of diamond fell? I don't think one of them is on a flush draw considering their betting unless they have a pair of kings too.

3) The odds 6,25-1 don't justify a call here in my eyes, especially when some of the cards don't guarantee us the pot. I think we could be looking at a split if a Q comes and if the 7 comes, I would be worried about QJ from the SB.