In this task you are given a premise and two alternatives in Chinese. You must choose the alternative that is more plausibly the 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.

[Q]: 那人向苍蝇用力击打。
(1)苍蝇嗡嗡飞走。(2)苍蝇静止不动。
[A]: 1


[Q]: 我裤子口袋里的钥匙不见了。
(1)这个口袋上有一个洞。(2)裤子是新的。
[A]: 1


[Q]: 卡车与汽车相撞。
(1)卡车加速了。(2)汽车被撞坏了。
[A]:
2