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. It makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis. It makes you much more likely to believe the hypothesis is true. Your task is to output 'strengthener' or 'weakener' if the update strengths or weakens the hypothesis, respectively.

Example Input: Premise: PersonX makes a basket
Hypothesis: PersonX then carries
Update: They don’t know how to dribble a ball
Example Output: strengthener

Example Input: Premise: PersonX finds a book
Hypothesis: Then, he bends over and picks the book up
Update: The book is covered in spiders
Example Output: weakener

Example Input: Premise: PersonX produces PersonY result
Hypothesis: PersonX is seen as happy
Update: The work is wonderful
Example Output:
strengthener