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 person in a blue tank top climbing a rock.
Hypothesis: A woman is rock climbing.
Update: The person has painted fingernails.

Ex Output:
strengthener


Ex Input:
Premise: A woman is looking out the window.
Hypothesis: The woman is enjoying the view outside.
Update: The window looks out onto a flower-filled meadow.

Ex Output:
strengthener


Ex Input:
Premise: A middle-aged man wearing a baseball cap turned backwards, a black shirt, and blue shorts who is driving a boat which has a wooden steering wheel with the british flag flown in the background.
Hypothesis: A man is wearing a dodgers cap while driving a boat on a lake.
Update: The boat can reach the shore in an hour by heading in any direction.

Ex Output:

strengthener