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 competition ended.
The teams shook hands.

SOLUTION: effect

PROBLEM: The vacationers took a ferry to the resort.
The resort was on an island.

SOLUTION: cause

PROBLEM: The girl's mouth ached.
She lost a tooth.

SOLUTION:
cause