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 calls the cops on PersonY
Hypothesis: Then, they get their concerns met
Update: PersonY was stalking PersonX.
Example Output: strengthener

Example Input: Premise: PersonX tells PersonY's mother
Hypothesis: As a result, PersonX feels mean
Update: It was a secret between friends
Example Output: strengthener

Example Input: Premise: PersonX often went
Hypothesis: As a result, PersonX wants to experience more
Update: It was X's favorite thing to do.
Example Output:
strengthener