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 is best friends
Hypothesis: PersonX then smiles
Update: PersonX's friend hit them.

SOLUTION: weakener

PROBLEM: Premise: PersonX goes from bad to worse
Hypothesis: PersonX is seen as sad
Update: They have red puffy eyes

SOLUTION: strengthener

PROBLEM: Premise: PersonX pricks PersonY's finger
Hypothesis: As a result, PersonX wants to continue hurting PersonX
Update: PersonX is taking blood from PersonY.

SOLUTION:
weakener