TASK DEFINITION: In this task your given two statements. 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: The building adjacent to my office was under construction.
My office was noisy.

SOLUTION: effect

PROBLEM: The man witnessed aliens.
He was hallucinating.

SOLUTION: cause

PROBLEM: The bird couldn't fly.
It injured its wing.

SOLUTION:
cause