0.5/1 Underfull river line

[CAPSLOCKFTW]

I've noticed villain actually folding to reraises the two times he's been reraised. He also seems to fold a decent amount to c-bets.

Party Poker
Pot Limit Omaha Ring game
Blinds: $0.50/$1
3 players
Converter

Stack sizes:
Button: $111.50
Hero: $101.80
BB: $101.52

Pre-flop: (3 players) Hero is SB with 9[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/club.gif[/img]
<font color="#cc0000">Button raises to $3.5</font>, Hero calls, BB calls.

Flop: 7[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] ($10.5, 3 players)
<font color="#cc0000">Hero bets $9.98</font>, BB calls, Button folds.

Turn: K[img]/images/graemlins/diamond.gif[/img] ($30.46, 2 players)
Hero checks, BB checks.

River: 9[img]/images/graemlins/club.gif[/img] ($30.46, 2 players)
Hero?