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 eats vegetables
Hypothesis: Because PersonX wanted to satisfy his hunger
Update: PersonX hasn't eaten all day.
Example Output: strengthener

Example Input: Premise: PersonX feels a little guilty
Hypothesis: PersonX is seen as a need to fix their guilt
Update: The enemy of PersonX dies.
Example Output: weakener

Example Input: Premise: PersonX tries several times
Hypothesis: As a result, PersonX feels motivated
Update: PersonX really wants to succeed.
Example Output:
strengthener