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: The Irish Setter is retrieving a flashlight from the pond.
Hypothesis: A dog is fetching something for its owner.
Update: Behind the dog are a few police cars with their lights on.

Ex Output:
weakener


Ex Input:
Premise: Two men and a young boy in purple jacket hold out promotional flyer's.
Hypothesis: People hand out flyer's.
Update: There is a stack of flyers on a table next to them.

Ex Output:
strengthener


Ex Input:
Premise: A man in an orange jacket playfully tosses a small girl into the air on an empty stretch of beach on an overcast day.
Hypothesis: Two people by the ocean are worried that it will rain.
Update: The clouds in the sky are turning dark grey.

Ex Output:

strengthener