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, woman, child sitting on benches waiting for the bus.
Hypothesis: The people are sitting outside.
Update: The wind cuts through you like a knife.

Ex Output:
strengthener


Ex Input:
Premise: An Asian man performing on a stage.
Hypothesis: A man singing.
Update: The man performs an opera aria.

Ex Output:
strengthener


Ex Input:
Premise: Two race horses, one brown and the other gray, racing against each other.
Hypothesis: Two horses are in a field.
Update: The horses  are being driven by jokies

Ex Output:

weakener