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.
Example: 该物品用气泡包装纸包着。
它很易碎。
Example solution: cause
Example explanation: The object being delicate is the cause of wrapping it in bubble wrap.

Problem: 烤箱变热了。
我把烤箱打开。

Solution: cause