100$PS: Silly hand

[TimberBee]

Villain is new to me, but he seems passive.

Do you fold, call or raise(25$ left or so)?

Poker Stars
Pot Limit Omaha Ring game
Blinds: $0.50/$1
6 players
Converter

Pre-flop: (6 players) Hero is CO with A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img]
UTG folds, UTG+1 calls, <font color="#cc0000">Hero raises to $4.5</font>, 3 folds, UTG+1 calls.

Flop: 9[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/club.gif[/img] ($10.5, 2 players)
UTG+1 checks, <font color="#cc0000">Hero bets $8</font>, UTG+1 calls.

Turn: A[img]/images/graemlins/diamond.gif[/img] ($26.5, 2 players)
UTG+1 checks, <font color="#cc0000">Hero bets $20</font>, UTG+1 calls.

River: 9[img]/images/graemlins/spade.gif[/img] ($66.5, 2 players)
<font color="#cc0000">UTG+1 bets $63.5</font>, Hero calls, folds or raises?