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 elevator doors opened.
The elevator arrived at the designated floor.

SOLUTION: cause

PROBLEM: The baby was wailing in his crib.
The mother picked up the baby.

SOLUTION: effect

PROBLEM: The executive decided not to hire the applicant.
The applicant failed a background check.

SOLUTION:
cause