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.

[EX Q]: 该名男子按下信封的湿口。
他把信封密封好了。
[EX A]: effect

[EX Q]: 那男孩睡不着。
他数着羊。
[EX A]: effect

[EX Q]: 一阵隆隆声在舞台上回荡。
音乐家敲击鼓。
[EX A]:
cause