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.

Premise: PersonX gets PersonY's lunch
Hypothesis: PersonX is seen as good about themselves
Update: PersonY eats every bite of the sandwich.
strengthener

Premise: PersonX turns PersonY's head to look at PersonY
Hypothesis: As a result, PersonX feels careless
Update: PersonX crashes into a pole.
strengthener

Premise: PersonX starts shaking
Hypothesis: PersonX then gets nervous
Update: PersonX is very cold.
weakener