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.

Example Input: Premise: Eight men work on scaffolding on a cloudless day.
Hypothesis: The eight men love to work on scaffolding when the days are cloudless.
Update: the men are laughing and singing while they work
Example Output: strengthener

Example Input: Premise: A man is playing a guitar on stage.
Hypothesis: Jimi Hendriplays live for an eager crowd
Update: The crowd cheers as the song ends.
Example Output: strengthener

Example Input: Premise: A little girl is talking to her father while she is waiting to eat.
Hypothesis: A father is wearing a shirt
Update: The people are at the beach.
Example Output:
weakener