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.

Ex Input:
母亲叫了一辆救护车。
她儿子从床上摔下来了。

Ex Output:
cause


Ex Input:
钢笔墨水用完了。
我用了一支铅笔。

Ex Output:
effect


Ex Input:
赛跑者感觉到他的竞争对手在逼近。
他加快了步伐。

Ex Output:

effect