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: 学生拼错了这个词。
老师纠正了她。

SOLUTION: effect

PROBLEM: 我的牛仔裤上有个洞。
我在人行道上绊倒了。

SOLUTION: cause

PROBLEM: 电梯门开了。
电梯到达指定的楼层。

SOLUTION:
cause