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: Tuppence, old bean! The two young people greeted each other affectionately, and momentarily blocked the Dover Street Tube exit in doing so. Choices: 1. They have known each other since they were kids and were like family. 2. The Dover Street Tube was so crowded that the two young people didn't get the chance to greet each other. 3. The two young people greeted each other in the Dover Street Tube exit.

1