Coming off their road win over the Redskins, the Bills went home, donned their throwbacks again, and played a Week 14 AFC East rematch with the still-winless Miami Dolphins.  In the first quarter, Buffalo drew first blood with rookie QB Trent Edwards completing a 13-yard TD pass and a 28-yard TD pass to TE Robert Royal.  Afterwards, the Bills continued their early pounding as Safety George Wilson returned a fumble 20 yards for a touchdown.  The Dolphins would get on the board with RB Samkon Gado getting a 12-yard TD run, yet Buffalo would answer right back with kicker Rian Lindell getting a 51-yard field goal, setting a new Buffalo Bills record for 18 consecutive field goals (beating Steve Christie's old record of 17; Lindell would later miss wide left from 46).  In the second quarter, the Bills continued their domination with Edwards completing a 9-yard TD pass to WR Lee Evans for the only score of the period. In the third quarter, Miami tried to rally as Gado got a 20-yard TD run, while kicker Jay Feely nailed a 41-yard field goal.  In the fourth quarter, Buffalo would put the game away as Edwards hooked up with Evans again on a 70-yard TD pass to secure a season-sweep.
Question: how many yards did wilson return?
Answer: 20