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 horse bucked.
A fly bit the horse.

SOLUTION: cause

PROBLEM: Political violence broke out in the nation.
Many citizens took refuge in other territories.

SOLUTION: effect

PROBLEM: The driver turned on the car's headlights.
The sun went down.

SOLUTION:
cause