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: A man wearing a black shirt.
Hypothesis: A man is ready for a wedding
Update: The shirt is sleeveless.
Example Output: weakener

Example Input: Premise: A lady with a satchel looks at merchandise in a flea market.
Hypothesis: A woman is looking to buy a book at the flea market.
Update: There is a sign behind her that says "Kitchen Korner"
Example Output: weakener

Example Input: Premise: The waiter with a white shirt and black vest is waiting on the people in the restaurant with a big mirror in the wall.
Hypothesis: The waiter is wearing a uniform.
Update: The other waiters are wearing red.
Example Output:
weakener