Write a question about the following article: Hoping to rebound from their road loss to the Cowboys, the 49ers flew to Ralph Wilson Stadium for a Week 13 interconference duel with the Buffalo Bills.  In the first quarter, the Niners struck first as QB Shaun Hill completed a 12-yard TD pass to WR Isaac Bruce.  In the second quarter, San Francisco increased their lead as kicker Joe Nedney got a 50-yard field goal.  In the third quarter, the Bills tried to rally as kicker Rian Lindell nailed a 22-yard field goal.  Fortunately, the Niners' defense held Buffalo's offense scoreless for the remainder of the game. With the win, not only did the 49ers improve to 4-8, but they finally gave the West Coast its first East Coast win.

Question about the article:
How many yards was the shortest field goal?