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]: 我把湿床单挂在户外晾衣绳上。
床单干了。
[EX A]: effect

[EX Q]: 旅客到达边境。
巡逻员检查了他们的护照。
[EX A]: effect

[EX Q]: 这个男孩没有通过历史考试。
他忘了学习。
[EX A]:
cause