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: I put shoes on.
The floor contained broken glass.

SOLUTION: cause

PROBLEM: The benefactor requested to stay anonymous.
He wanted to maintain his privacy.

SOLUTION: cause

PROBLEM: The woman spotted her friend from across the room.
The woman waved.

SOLUTION:
cause