Task: Question Answering
Input (English): Passage: Coming off their win over the Giants, the Cowboys stayed at home for a Week 16 interconference battle with the Baltimore Ravens, in what would be the final game at Texas Stadium. In the first quarter, Dallas struck first as rookie running back Tashard Choice got a 2-yard touchdown run.  The Ravens would respond with a 26-yard field goal from kicker Matt Stover.  Baltimore would take the lead in the second quarter as Stover got a 29-yard and a 37-yard field goal.  In the third quarter, the Ravens increased their lead as quarterback Joe Flacco completed a 13-yard touchdown pass to wide receiver Derrick Mason.  The Cowboys answered in the fourth quarter as kicker Nick Folk got a 35-yard field goal, but Baltimore answered right back with Stover's 35-yard field goal.  Dallas tried to rally as quarterback Tony Romo completed a 7-yard touchdown pass to wide receiver Terrell Owens, but the Ravens struck right back as running back Willis McGahee got a 77-yard touchdown run.  The Cowboys tried to come back as Romo completed a 21-yard touchdown pass to tight end Jason Witten, but the Ravens pulled away with fullback Le'Ron McClain's 82-yard touchdown run (the longest TD run that the Cowboys would ever give up during their tenure at Texas Stadium). With the loss, Dallas fell to 9-6 on the season and 0-3 all-time against the Ravens. For a while they lost their chances of controlling the NFC Wild Card spot, but got it back the next day with the Tampa Bay Buccaneers losing 41-24 to the San Diego Chargers. 
Question: How many yards was the longest touchdown run? 
Answer type: Number 
Output (English): 82.