2nd nuts on the turn, what to do on the river

[Yads]

No reads on villian, What do you guys do on the river?

Paradise $50 PL Omaha

Dealt to hero in the BB Q[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/heart.gif[/img]

4 limps, SB completes, Hero checks.

flop is 6[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img]
checked around

turn is 9[img]/images/graemlins/diamond.gif[/img]
SB checks, Hero bets the pot, folded to SB who calls.

river is Q[img]/images/graemlins/heart.gif[/img]
SB instantly bets the pot, hero?

What do you guys do in this situation?