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.

Example Input: Premise: PersonX asks PersonY out
Hypothesis: As a result, PersonX feels brave
Update: PersonX has never spoken to PersonY before.
Example Output: strengthener

Example Input: Premise: PersonX belongs to PersonY group
Hypothesis: As a result, PersonX feels team spirited
Update: Person X is high fiving everyone in the group.
Example Output: strengthener

Example Input: Premise: PersonX claws PersonY's way
Hypothesis: PersonX is seen as happy
Update: PersonX is fighting for their life
Example Output:
weakener