UTG is unknown. For the record, I almost never try to induce a river bluff from a PP 5/10 unknown.
Party Poker 5/10 Hold'em (6 max, 5 handed)
converter
Preflop: Hero is BB with 8[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#666666">
3 folds</font>, Hero calls.
Flop: (4.40 SB) A[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, Hero calls.
Turn: (3.20 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, UTG calls.
River: (5.20 BB) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, UTG checks.
Final Pot: 5.20 BB