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.
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Question: 这群人离开了博物馆。
他们看了所有的展品。

Answer: cause


Question: 学生知道这道问题的答案。
他举起了手。

Answer: effect


Question: 那人向苍蝇用力击打。
苍蝇嗡嗡飞走。

Answer:
effect