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 boy got a black eye.
The bully punched the boy.

SOLUTION: cause

PROBLEM: My favorite song came on the radio.
I sang along to it.

SOLUTION: effect

PROBLEM: I left work early.
I had a headache.

SOLUTION:
cause