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 puts in PersonX's place
Hypothesis: PersonX then personX offers criticism
Update: PersonX has a slight case of narcissism.
Example Output: weakener

Example Input: Premise: PersonX makes a break for it
Hypothesis: Before, PersonX needed decide on direction
Update: PersonX has been planning an escape from a prison
Example Output: strengthener

Example Input: Premise: PersonX has trouble sleeping at night
Hypothesis: Before, PersonX needed to get ready for bed
Update: Person X is brushing their teeth.
Example Output:
strengthener