JJ in the big blind with two callers and scary flop

[shuinthehouse]

While pairing the board with the Ad are within UTG's range and he'd play them this way, seems to me more likely we are behind to a set, str8 or flush, all within his 34% limping range. I'm trying to see the river cheap, calling one and folding two on the turn, folding river UI if UTG bets and MP calls, calling if UTG bets and MP folds.