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]: 同事挂断了我的电话。
我要求与主管谈话。
[EX A]: cause

[EX Q]: 舞台上的帷幕拉开了。
演出的第一幕开始了。
[EX A]: effect

[EX Q]: 这个镇下了几英寸的雪。
学校停课了。
[EX A]:
effect