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.

Ex Input:
Premise: PersonX rides PersonY's horse
Hypothesis: Before, PersonX needed to go where the horse is
Update: PersonX is parked outside Y’s house

Ex Output:
strengthener


Ex Input:
Premise: PersonX works well
Hypothesis: Because PersonX wanted feel happy while working
Update: PersonX wants a promotion

Ex Output:
weakener


Ex Input:
Premise: PersonX performs PersonY's tasks
Hypothesis: As a result, PersonX feels frustrated
Update: PersonX loves doing PersonY's tasks since they're so much easier to do.

Ex Output:

weakener