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I would raise or fold PF, depending on who opened.
It worked out a little better since you got 4 callers, but with 4 callers you really are now playing for set value.

I don't think AQ is out of range for SB, either is KQ or JQ.
Since you didn't bet the flop (and I think AQ has to), I'm not sure you could get JQ to fold. I think the only thing you can get the SB to fold is a bluff, in which case wouldn't calling be better? I think the chances of the SB bluffing are a little less because it's multi-way.

I probably fold the turn.