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 boaters set off a flare.
Their boat was rescued.

SOLUTION: effect

PROBLEM: The client approved the architect's plans for the building.
The architect constructed the building.

SOLUTION: effect

PROBLEM: The friends lost touch.
They moved to different cities.

SOLUTION:
cause