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.

我整理了我的房间。
我在等待友人到来。
cause

朋友们决定分享这个汉堡包。
他们把汉堡包切成两半。
effect

这对夫妇早早地离开去看演出。
他们预计剧院周围会有堵车。

cause