In this task your given two statements in Chinese. You must judge whether the second sentence is the cause or effect of the first one. Label the instances as "cause" or "effect" based on your judgment. The sentences are separated by a newline character.

丈夫发现他的妻子有外遇。
他提出离婚。
effect

一只小鸡从鸡蛋里出来。
鸡蛋孵化了。
cause

我感到筋疲力尽。
我很早就上床睡觉了。

effect