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 gives the ultimate pleasure
Hypothesis: Because PersonX wanted to be the best
Update: They practice all the time
Example Output: strengthener

Example Input: Premise: PersonX demands PersonY explanation
Hypothesis: As a result, PersonX feels leader
Update: PersonX just got a promotion
Example Output: strengthener

Example Input: Premise: PersonX surprises PersonY with a trip
Hypothesis: PersonX then pack up clothes
Update: The trip lasts one day
Example Output:
weakener