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 looks before you leap
Hypothesis: PersonX then prevents bad things from happening
Update: The person ahead of PersonX slipped and sprained an ankle.
strengthener

Premise: PersonX goes home to bed
Hypothesis: As a result, PersonX wants snore
Update: PersonX has a deviated septum.
strengthener

Premise: PersonX falls asleep in class
Hypothesis: Because PersonX wanted to take a nap due to being tired.
Update: PersonX stayed up all night

strengthener