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.
--------
Question: 风吹过开着的窗户。
窗帘抖动了。

Answer: effect


Question: 那人的头撞了一下。
他得了脑震荡。

Answer: effect


Question: 那人拿了薄荷。
他担心口臭。

Answer:
cause