QQ river shove from passive donk

[Beanos]

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $1/$2
6 players
Converter

Pre-flop: (6 players) Hero is UTG+1 with Q[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $7</font>, 2 folds, SB calls, BB folds.

Flop: 2[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] ($16, 2 players)
SB checks, <font color="#cc0000">Hero bets $12</font>, SB calls.

Turn: J[img]/images/graemlins/club.gif[/img] ($40, 2 players)
SB checks, <font color="#cc0000">Hero bets $32</font>, SB calls.

River: 7[img]/images/graemlins/club.gif[/img] ($104, 2 players)
<font color="#cc0000">SB is all-in $104.5</font>, Hero

Hero TAG. I hadnt seen this guy make a bet on the river so far, his stats are 40/10/.53 over 100 hands. AJ of diamonds was the only hand i could see he might value bet that i beat. He waited about 2 seconds before the river shove. Call or Fold?