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: Two young men in a purple and white shirt running on grass.
Hypothesis: Two young men are playing tag.
Update: The men have frisbees.

Ex Output:
weakener


Ex Input:
Premise: Two men wearing sunglasses and walking outside.
Hypothesis: The two men are siblings.
Update: The men have different parents.

Ex Output:
weakener


Ex Input:
Premise: A teammate pats a fellow player on the shoulder during a football game.
Hypothesis: A teammate offers encouragement.
Update: The player who was patted shoves the other player away.

Ex Output:

weakener