TASK DEFINITION: In this task, you are given a premise, a hypothesis, and an update. The premise sentence describes a real-world situation and is always assumed to be true. The hypothesis sentence describes an assumption or inference that you might make about that situation having read the premise. The update provides additional information about the situation that might weaken or strengthen the hypothesis. A weakener is a statement that weakens the hypothesis. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.
PROBLEM: Premise: PersonX looks up at PersonY
Hypothesis: Because PersonX wanted looks up
Update: PersonY is violently grabbing PersonX's chin.

SOLUTION: weakener

PROBLEM: Premise: PersonX stays warm
Hypothesis: As a result, PersonX feels active
Update: PersonX is running in the cold

SOLUTION: strengthener

PROBLEM: Premise: PersonX has chest pains
Hypothesis: As a result, PersonX feels weak
Update: PersonX is running around the neighborhood.

SOLUTION:
strengthener