Raise/call river donk with set?

[ntnBO]

Villain is LP

PokerStars 2/4 Hold'em (10 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is Button with 5[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, Villain calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, Villain calls.

Flop: (5.50 SB) K[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets</font>, Villain calls.

Turn: (3.75 BB) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets</font>, Villain calls.

River: (5.75 BB) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Villain bets</font>, <font color="#CC3333">Hero ?????</font>


I'd like to think the only hands he donks into me with after the river are JT and 99.

BO