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.

Q: 我半夜醒来，感觉很冷。
我穿上运动裤。

A: effect
****
Q: 孩子的鞋带解开了。
他在操场上跑来跑去。

A: cause
****
Q: 同事挂断了我的电话。
我要求与主管谈话。

A:
cause
****