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 is a great basketball player
Hypothesis: PersonX is seen as accomplished.
Update: PersonX wins the title.
Example Output: strengthener

Example Input: Premise: PersonX stays warm
Hypothesis: As a result, PersonX feels active
Update: PersonX is running in the cold
Example Output: strengthener

Example Input: Premise: PersonX is within PersonY's power
Hypothesis: PersonX then submits to PersonY
Update: Person X escapes captivity.
Example Output:
weakener