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 with two dogs on a beach
Hypothesis: A man is chasing two dogs on a beach.
Update: The dogs got off of their leashes.
Example Output: strengthener

Example Input: Premise: A young woman and a young man sitting in the grass
Hypothesis: They are a couple
Update: The woman and the man maintain a distance between them and never touch.
Example Output: weakener

Example Input: Premise: A girl standing in an enclosed place
Hypothesis: A girl is inside a place because she got in trouble.
Update: She is smiling and eating an ice cream cone.
Example Output:
weakener