PokerStars No-Limit Hold'em, $1.00 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($100.50)
MP ($259.35)
Button ($148.30)
SB ($393.45)
BB ($120.75)

Preflop: Hero is UTG with T, A.
Hero raises to $3.5, MP calls $3.50, Button calls $3.50, 2 folds.

Flop: ($12) 5, 2, T (3 players)
Hero bets $9, MP calls $9, Button calls $9.

Turn: ($39) 8 (3 players)
Hero ???

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Button seems like a mediocre TAG, while MP seems to have been calling PF quite frequently, no strong read on his postflop tendencies.

What's your turn and river line?