Hero folds. I would hate to stand just as clueless on the river. However, lets rewind to the turn and say villain checks.

Turn: ($71) 2 (2 players)
UTG checks, Hero???

Now hero has to make a bet to avoid giving that draw a free card, right? I would think a good villain TT line here is to call flop and c/r turn AI, as it would be hard for him to put me on a draw with my flop play?

Hero bets 40$ and folds to a c/r?