Given a premise and two alternatives, choose the alternative that is a more plausible cause or effect of the situation described by the premise. The input format is "premise
(1)alternative_1(2)alternative_2", the output should either be "1" or "2" based on your judgment.

[EX Q]: The seasons changed from summer to autumn.
(1)People evacuated their homes.(2)Leaves fell from the trees.
[EX A]: 2

[EX Q]: The man hit his head.
(1)He got lost in thought.(2)He got a concussion.
[EX A]: 2

[EX Q]: The warring countries wanted peace.
(1)They developed nuclear weapons.(2)They negotiated a treaty.
[EX A]:
2