River decision

[MaqEvil]

Party $50 SNG, 2nd hand.

I get A [img]/images/graemlins/club.gif[/img]Q [img]/images/graemlins/club.gif[/img] in MP. Folded to me; I raise to 45; LP calls; all others fold.

The flop comes 5 [img]/images/graemlins/club.gif[/img]J [img]/images/graemlins/spade.gif[/img]2 [img]/images/graemlins/spade.gif[/img]

We both check

The turn comes T [img]/images/graemlins/club.gif[/img]

I bet 100; LP raises to 200; I call

The river comes Q [img]/images/graemlins/diamond.gif[/img]

I bet 200; LP calls

I was confused as to what I should do on the river. I didn't have much of a read on his hand at all. What do you do on the river here?