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 racks PersonX's brain
Hypothesis: As a result, PersonX feels lethargic
Update: PersonX exerts a lot of mental energy.
Example Output: weakener

Example Input: Premise: PersonX turns on PersonY's side
Hypothesis: As a result, PersonX feels content
Update: PersonX worries they are not enough.
Example Output: weakener

Example Input: Premise: PersonX eats the vegetables
Hypothesis: PersonX is seen as satisfied
Update: PersonX gags when eating
Example Output:
weakener