TASK DEFINITION: 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.
PROBLEM: 交战国家要求和平。
他们商定了一项条约。

SOLUTION: effect

PROBLEM: 摄影师忘了用相机上的闪光灯。
照片模糊不清。

SOLUTION: effect

PROBLEM: 这个男孩恶意地捉弄了他的新同学。
这个男孩不喜欢这个新同学。

SOLUTION:
cause