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 kid on a surfboard riding a small wave.
Hypothesis: A kid on a surfboard riding a wave for a competition.
Update: The kid is being cheered on by a large crowd.

Ex Output:
strengthener


Ex Input:
Premise: Two men wearing sunglasses and walking outside.
Hypothesis: The two men are siblings.
Update: The men have different parents.

Ex Output:
weakener


Ex Input:
Premise: A photographer is taking photos of flowers.
Hypothesis: A photographer is crafting his next book.
Update: The photographer is a popular author.

Ex Output:

strengthener