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: After six days of eyeball-to-eyeball challenge (now known in the US as the Cuban Missile Crisis ), the potential nuclear disaster was averted when Khrushchev backed down in return for a US promise never to invade Cuba. Choices: 1. There was a Cuban Missile Crisis that lasted for four days. 2. There was a Cuban Missile Crisis that lasted for six days. 3. There was a Cuban Missile Crisis that lasted for six days and it was feared by many to be the start of something greater.

3