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.

Q: The boy felt homesick.
He went away to camp.

A: cause
****
Q: I knocked on my neighbor's door.
My neighbor invited me in.

A: effect
****
Q: The mother called an ambulance.
Her son fell out of his bed.

A:
cause
****