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 nowhere to be found
Hypothesis: As a result, PersonX wants find them
Update: PersonX is lonely
Example Output: strengthener

Example Input: Premise: PersonX finishes PersonY's work
Hypothesis: As a result, PersonX feels reliable
Update: PersonY was unable to complete the project due to an illness.
Example Output: strengthener

Example Input: Premise: PersonX stresses PersonX out
Hypothesis: Because PersonX wanted him to cry
Update: PersonX hates himself
Example Output:
strengthener