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 boy stepped in mud.
The mud stuck to his shoes.

SOLUTION: effect

PROBLEM: I drank from the water fountain.
I was thirsty.

SOLUTION: cause

PROBLEM: The student rushed to finish the book.
It was due to be returned to the library.

SOLUTION:
cause