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]: 这男子觉得有义务参加这次活动。
他答应了他的朋友他会去的。
[EX A]: cause

[EX Q]: 我点燃了蜡烛。
蜡从蜡烛上掉下来。
[EX A]: effect

[EX Q]: 我把信寄到信箱里了。
邮局把信交付了。
[EX A]:
effect