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 takes PersonY to PersonZ
Hypothesis: As a result, PersonX feels generous
Update: PersonX drives for four hours

Ex Output:
strengthener


Ex Input:
Premise: PersonX finds a good deal
Hypothesis: PersonX is seen as glad
Update: The deal is still expensive

Ex Output:
weakener


Ex Input:
Premise: PersonX would no longer
Hypothesis: PersonX then becomes fed up
Update: He hates to wait

Ex Output:

strengthener