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: Four men, seated inside a plain room on benches and dressed in military fatigues are conversing, one man wears a white YWCA t-shirt.
Hypothesis: Four soldiers have just finished training.
Update: The men are sweaty and muddy

Ex Output:
strengthener


Ex Input:
Premise: A man in a blue shirt is kicking a yellow object while other students are practicing karate in the background.
Hypothesis: A man and students are training.
Update: The man is kicking a soccer ball to his child

Ex Output:

weakener