Instructions: In this task your given two statements in Vietnamese. 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.
Input: Khách hàng đã phê duyệt kế hoạch của kiến trúc sư.
Các kiến trúc sư xây dựng tòa nhà.
Output:
effect