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 woman wearing blue pants and a blue and pink shirt with a white cloth over her head is kneeling on front of several buckets and containers on the floor.
Hypothesis: A woman is cleaning the floor
Update: The buckets are filled with soapy water and the woman is holding a rag.
Example Output: strengthener

Example Input: Premise: Sushi bar with giant fish decoration and many customers.
Hypothesis: The customers are there for a special sale.
Update: The restaurant is closing
Example Output: strengthener

Example Input: Premise: A boy is driving a toy tractor while another boy attempts to jump into the trailer.
Hypothesis: There were children playing with their toys outside.
Update: The tractor gets stuck in some mud.
Example Output:
strengthener