Task: Question Understanding
Input (English): Passage:  Coming off their bye week, the Colts flew to the Edward Jones Dome for a Week 7 interconference duel with the St. Louis Rams.  Indianapolis came out of the gates early in the first quarter as quarterback Peyton Manning completed a six-yard touchdown pass to wide receiver Reggie Wayne.  The Rams would respond with a 30-yard field goal from kicker Josh Brown, yet the Colts answered with Manning hooking up with tight end Dallas Clark on a 22-yard touchdown pass.  Afterwards, running back Joseph Addai would acquire the only score of the second quarter with a six-yard touchdown. St. Louis would begin the third quarter with Brown booting a 45-yard field goal, yet Indianapolis calmly responded with rookie cornerback Jacob Lacey returning an interception 35 yards for a touchdown.  Afterwards, the Colts closed out the game with Manning finding rookie wide receiver Austin Collie on an eight-yard touchdown pass and running back Chad Simpson getting a 31-yard touchdown run. With the win, Indianapolis improved to 6-0 and increased their winning streak to 14 games.
Question: How many yards did the longest touchdown run go for?
Output (English): number