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: Hai vợ chồng ký hợp đồng thuê một căn hộ.
Hai vợ chồng chuyển vào căn hộ.
Output:
effect