2/4 weird hand

[MatthewRyan]

villians are unkown, but probably bad(?, I just sat like an orbit ago so no reads.

Full Tilt Poker - Pot Limit Hold'em Cash Game - $2/$4 Blinds - 5 Players - (LegoPoker Hand History Converter)

SB: $609.30
BB: $250.80
UTG: $327.00
Hero (CO): $416.00
BTN: $718.80

Preflop: Hero is dealt K[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/heart.gif[/img] (5 Players)
UTG folds, <font color="red">Hero raises to $14.00</font>, BTN folds, SB calls $12.00, BB calls $10.00

Flop: ($42) T[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img] (3 Players)
SB checks, BB checks, <font color="red">Hero bets $28.00</font>, SB calls $28.00, BB calls $28.00

Turn: ($126) A[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">SB bets $56.00</font>, BB calls $56.00, Hero??

It looks like the sb hit his QJ, or even AT. On the other hand, I dont like folding 2pair getting 4.5-1 here. So if you call turn, is the best plan to fold to a reasonable bet on a blank river?