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 leader antagonized the extremists among his country.
The extremists assassinated him.

SOLUTION: effect

PROBLEM: I jumped instinctively in fright.
I sensed someone approaching me from behind.

SOLUTION: cause

PROBLEM: The librarian located the book in the stacks.
I requested the librarian's help.

SOLUTION:
cause