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.

这男人变老了。
他的头发变灰了。
effect

那女人沮丧地叹了口气。
她丈夫误解了她的顾虑。
cause

这个女孩向她的朋友吹牛。
她比赛获胜了。

cause