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 looks before you leap
Hypothesis: PersonX then prevents bad things from happening
Update: The person ahead of PersonX slipped and sprained an ankle.
Example Output: strengthener

Example Input: Premise: PersonX runs PersonY's business
Hypothesis: PersonX is seen as secure
Update: They have a lot of money saved
Example Output: strengthener

Example Input: Premise: PersonX searches everywhere
Hypothesis: PersonX then finds lost dog
Update: They are crying tears of joy
Example Output:
strengthener