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.

女人感到怀旧。
(1)她遇到了一个儿时的朋友。(2)她对孩子们大喊大叫。
1

那人的头撞了一下。
(1)他陷入了沉思。(2)他得了脑震荡。
2

乐队演奏了他们的热门歌曲。
(1)观众随着音乐拍手。(2)观众礼貌地沉默着。

1