instruction:
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.
question:
我给妈妈买了一件礼物。
那是她的生日。
answer:
cause


question:
赌徒很自信。
他赌了所有的钱。
answer:
effect


question:
塑料容器融化了。
我把容器放在热炉子上。
answer:

cause