Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
Input: Statement: The Air Force estimated that in late 2001, when the F-22 entered limited production, it should have been able to demonstrate almost 2 flying hours between maintenance actions. Choices: 1. The Air Force initially estimated that there would be 2 flying hours. 2. The F-22 entered mass production in late 2001. 3. The Air Force later believed that there were 3 hours of flying time available.

3