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.

研究人员证明了这一理论。
大众接受了这一理论。
effect

这个家庭想了解他们的新邻居。
一家人邀请邻居过来吃饭。
effect

演员在演出前心慌。
他有上台紧张症。

cause