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: A man in a bright yellow jacket and helmet sits astride a motorcycle chatting with a man in a blue sweatshirt.
Hypothesis: Two men are talking about their bikes.
Update: One of the men points at the other man’s bike

Ex Output:
strengthener


Ex Input:
Premise: The white dog stands in the snow wearing a black jacket.
Hypothesis: The dog is dressed for the snow.
Update: The dog thinks he's a person.

Ex Output:
weakener


Ex Input:
Premise: The lead singer visited with his band members and had the guitarist sing along with the song.
Hypothesis: A man is singing along in a hair metal band.
Update: All band members have really long hair

Ex Output:

strengthener