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 hits PersonY hard
Hypothesis: PersonX then sore hand
Update: The review of his book was scathing.

Ex Output:
weakener


Ex Input:
Premise: PersonX opens the back door
Hypothesis: As a result, PersonX feels fit
Update: The air inside was considerably colder

Ex Output:
strengthener


Ex Input:
Premise: PersonX puts the book
Hypothesis: PersonX then cannot read it from where it is
Update: The book has large print and is open.

Ex Output:

weakener