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 yellow rain gear on a boat
Hypothesis: A man is getting soaked on the boat.
Update: The man wipes his face with a towel.

Ex Output:
strengthener


Ex Input:
Premise: A young boy wearing a black t-shirt, holding a green baby lizard.
Hypothesis: a boy holding a lizard  that he just found
Update: The boy is in the desert.

Ex Output:
strengthener


Ex Input:
Premise: Kids walking on the street, one blond girl wearing a white outfit drinking from a straw, one brown-haired girl in white shorts and dark top, turned around, holding her cellphone.
Hypothesis: Two older girls are walking down a suburban street.
Update: Tall high rises surround the girls

Ex Output:

weakener