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 Q]: 温度计中的汞上升。
天气变暖和了。
[EX A]: cause

[EX Q]: 我自行车上的轮胎没气了。
我把空气注入轮胎里。
[EX A]: effect

[EX Q]: 绑架者释放了人质。
他们接受了赎金。
[EX A]:
cause