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 works day and night
Hypothesis: PersonX then sets a strong example
Update: They are the boss of the company
strengthener

Premise: PersonX feels good about PersonY's decision
Hypothesis: As a result, PersonX feels proud
Update: PersonY decided to go to PersonX'a alma mater.
strengthener

Premise: PersonX hears PersonY's voice again
Hypothesis: PersonX is seen as happy
Update: PersonY is their best friend

strengthener