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 a blue shirt is pushing another man in a white shirt during football practice.
Hypothesis: The offensive man is blocking the defense.
Update: The man in white weighs 300 pounds

Ex Output:
strengthener


Ex Input:
Premise: A man running across the grass towards a woman.
Hypothesis: A man is running to his wife.
Update: The man has a police uniform on

Ex Output:
weakener


Ex Input:
Premise: The mother with two son are swimming in the sea.
Hypothesis: the sons are being chased by their mom in the ocean
Update: The mother is bobbing up and down.

Ex Output:

weakener