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.

The man witnessed aliens.
He was hallucinating.
cause

The boy felt homesick.
He went away to camp.
cause

The surfers returned to the beach.
They saw a shark.

cause