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: 男孩戴着牙套。
他的牙齿变得直了。

A: effect
****
Q: 我重新加了水瓶。
我喝了它里所有的水。

A: cause
****
Q: 汽车抛锚了。
发动机过热。

A:
cause
****