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: Woman is making a half smile at the camera.
Hypothesis: woman takes selfie
Update: The camera is on the woman's phone.

Ex Output:
strengthener


Ex Input:
Premise: A person in a blue kayak battles the waves.
Hypothesis: A woman is in a kayak in the ocean.
Update: The woman is in a river

Ex Output:

weakener