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 hits the bricks
Hypothesis: As a result, PersonX feels worn out
Update: PersonX has had a lot of caffeine.
weakener

Premise: PersonX believes would lead
Hypothesis: PersonX then is surprised
Update: PersonX was just hired two weeks ago.
weakener

Premise: PersonX is four years old
Hypothesis: As a result, PersonX feels excited
Update: PersonX is napping all the time
weakener