Task: Question Answering
Input (English): Context: The Vikings began their 2010 pre-season with a trip to Edward Jones Dome to take on the league's worst team from 2009, the St. Louis Rams. The Rams roster featured rookie quarterback Sam Bradford, signed as the #1 overall pick in the 2010 NFL Draft. Meanwhile, the Vikings were without six members of their regular starting offense, including QB Brett Favre and RB Adrian Peterson. The Rams got the first touchdown of the game with 1:29 remaining in the first quarter, when Danny Amendola returned a Chris Kluwe punt for 93 yards. The Vikings responded with two TDs in the second quarter; first, backup QB Sage Rosenfels passed for two yards to wide receiver Logan Payne, before throwing a 65-yard TD pass to tight end Garrett Mills. Rosenfels got his third passing TD in the third quarter, with a 71-yard pass to WR Marko Mitchell. The victory was completed with 6:49 left in the game as fellow rookies - QB Joe Webb and TE Mickey Shuler - combined for a two-yard pass. 
 Question: What position does Adrian Peterson play?
Output (English): rb adrian peterson