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: 门铃响了。
(1)来访者轻拍门上的门环。(2)那女人从门上的钥匙孔里窥视着。

A: 2
****
Q: 树枝落在河里。
(1)树枝向下游移动。(2)这条河的水流变强了。

A: 1
****
Q: 我的手发粘。
(1)我吃了甜甜圈。(2)我爱吃甜食。

A:
1
****