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.

[EX Q]: 母亲让儿子安静下来。
(1)她的儿子笑了。(2)她儿子发牢骚。
[EX A]: 2

[EX Q]: 这棵树落叶了。
(1)叶子变色了。(2)叶子堆积在地面上。
[EX A]: 2

[EX Q]: 女孩的手起了水泡。
(1)她打了一封信。(2)她爬上了一根绳子。
[EX A]:
2