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.

孩子们被送到孤儿院。
他们的父母死了。
cause

我熬夜了。
我早上很累。
effect

冲浪者回到海滩。
他们看到了一条鲨鱼。

cause