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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Ex Input:
Premise: Two dogs on leashes straining toward each other while their owners walk away from each other.
Hypothesis: The dogs hate eachother.
Update: The two male dogs are very aggressive towards each other.

Ex Output:
strengthener


Ex Input:
Premise: Two men playing stringed instruments.
Hypothesis: Two guys are preparing for a concert.
Update: They sit in front of their cases in a local park.

Ex Output:
weakener


Ex Input:
Premise: Asian men are participating in some kind of activity wearing traditional garb.
Hypothesis: A group of asian men wearing traditional garb practicing karate with one another.
Update: The Asian men read from prayer books and kneel in prayer.

Ex Output:

weakener