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 pays PersonX's debts
Hypothesis: Before, PersonX needed relationship with PersonY
Update: PersonX send the money to the debt collector, PersonY.
Example Output: weakener

Example Input: Premise: PersonX finds PersonX's hotel
Hypothesis: As a result, PersonX wants to take rest
Update: PersonX just drove 500 miles.
Example Output: strengthener

Example Input: Premise: PersonX steps away
Hypothesis: As a result, PersonX wants to show his enemity
Update: Person X is frowning and shaking his head.
Example Output:
strengthener