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 changes PersonX's way
Hypothesis: As a result, PersonX feels fit
Update: They enjoyed taking a swim in the pool after jogging in the morning.
Example Output: strengthener

Example Input: Premise: PersonX buys tickets to a concert
Hypothesis: As a result, PersonX feels fun
Update: The concert is for religion.
Example Output: weakener

Example Input: Premise: PersonX learns to swim
Hypothesis: As a result, PersonX feels curious
Update: X signs up for scuba lessons
Example Output:
strengthener