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 finally gave in
Hypothesis: As a result, PersonX feels tired
Update: The deliberation took many hours.
Example Output: strengthener

Example Input: Premise: PersonX makes a night of it
Hypothesis: PersonX is seen as tired and satisfied
Update: PersonX wants the party to last all night.
Example Output: weakener

Example Input: Premise: PersonX buys a new shirt
Hypothesis: As a result, PersonX wants wear his new shirt
Update: PersonX looks for gift wrapping paper.
Example Output:
weakener