TASK DEFINITION: In this task your given two statements in Indonesian. 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.
PROBLEM: Saya tolak undangan pesta ulang tahun itu.
Saya sedang di luar kota.

SOLUTION: cause

PROBLEM: Tiket film itu terjual habis.
Itu terjadi ketika hari pembukaan untuk film itu.

SOLUTION: cause

PROBLEM: Burung itu mengepakkan sayapnya.
Ia terbang ke atas.

SOLUTION:
effect