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 boy jumping over another boy on a trampoline.
Hypothesis: The two boys are related.
Update: The boys are of different races.

Ex Output:
weakener


Ex Input:
Premise: Cheerleaders perform.
Hypothesis: The Cheerleaders are shaking their pom poms
Update: The cheerleaders did a gymnastics routine.

Ex Output:
weakener


Ex Input:
Premise: A man is driving a white van sprayed painted with graffiti.
Hypothesis: A man is driving away from some cops.
Update: The man has hostages in the back of his van

Ex Output:

strengthener