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.

这对夫妇见到对方很高兴。
(1)他们接吻了。(2)他们休息了。
1

火车上的乘客奇怪地看着他。
(1)他盯着地面。(2)他在自言自语。
2

一块陨石落在了海里。
(1)海啸发生了。(2)开始下冰雹。

1