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 pets the cat
Hypothesis: Before, PersonX needed hold the cat
Update: The cat is very shaky

Ex Output:
strengthener


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

Ex Output:
strengthener


Ex Input:
Premise: PersonX suits PersonX's needs
Hypothesis: As a result, PersonX feels empathetic
Update: PersonX has to be healthy for their family.

Ex Output:

strengthener