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.

Input: Consider Input: 龙卷风穿过了整个城镇。
(1)法院的屋顶被吹掉了。(2)公路可能引起危险地结冰了。

Output: 1


Input: Consider Input: 电梯门开了。
(1)电梯到达指定的楼层。(2)电梯卡在楼层间。

Output: 1


Input: Consider Input: 汽车凹陷了。
(1)司机撞到了电线杆上。(2)司机闯了红灯。


Output: 1


