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

Example Input: Premise: PersonX depends upon the presence
Hypothesis: PersonX is seen as dependent
Update: Everyone knows that PersonX has depended on the presence for a long time.
Example Output: strengthener

Example Input: Premise: PersonX asks PersonY to prom
Hypothesis: PersonX is seen as excitement
Update: PersonX was doing his friend a favor.
Example Output:
weakener