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 who is next to a river smiles tentatively at the camera.
Hypothesis: a boy is smiling at the camera before he jumps in the river
Update: The boy is wearing a winter jacket.

Ex Output:
weakener


Ex Input:
Premise: Five women are sitting in a greenhouse with desert succulent plants, possibly reading or discussing something together.
Hypothesis: The female friends are taking care of the new greenhouse.
Update: One woman gets up to tend to the flowers.

Ex Output:
strengthener


Ex Input:
Premise: Cheerleaders are performing on a football field.
Hypothesis: Cheerleaders are performing on AstroTurf.
Update: Two of the cheerleaders have rug burns on their knees from the AstroTurf.

Ex Output:

strengthener