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 black man wearing round sunglasses, a colorful shirt, and blue jeans sitting on the ground.
Hypothesis: man on coffee break
Update: The man is eating a sandwich.

Ex Output:
weakener


Ex Input:
Premise: A car wash worker cleaning the interior of the wheel.
Hypothesis: a person cleaning for a tip
Update: Wheel interiors are not included as a standard car wash feature.

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 kayak is on lake Michigan

Ex Output:

weakener