Task: Question Answering
Input (English): Passage: Philadelphia would score first in the game with a 51-yard David Akers field goal. Then in the second quarter, the Eagles Brian Westbrook scored on a 30-yard touchdown run that gave Philadelphia a 10-0 lead. With 7 seconds left in the 1st half, the Eagles attempted to go up 13-0 with a field goal, instead, the kick was blocked and returned 71 yards by Kevin Dockery for a Giants touchdown. That cut the lead to 10-7. Early in the third quarter, Donovan McNabb found Brian Westbrook for a 40-yard Eagles touchdown that increased their lead to 17-7. Philadelphia would score again in the 3rd with a 34-yard field goal by David Akers. The Giants would score on a 1-yard pass from Eli Manning to Darcy Johnson with 20 seconds left in the game, but couldn't recover an onside kick and the Eagles won the game. Despite falling to 11-2, the Giants clinched the NFC East title when the Dallas Cowboys lost to the Pittsburgh Steelers 20-13. 
Question: How many yards longer was Akers' first field goal over his second one? 
Answer type: Number 
Output (English): 17.