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 takes the new job
Hypothesis: Before, PersonX needed to go for a job interview
Update: PersonX was surprised to hear from the recruiter out of the blue giving him a job offer right then and there.
Example Output: weakener

Example Input: Premise: PersonX returns to the store
Hypothesis: As a result, PersonX wants to demand a new vase at customer service
Update: They need something fixed
Example Output: weakener

Example Input: Premise: PersonX loses 15 pounds
Hypothesis: Because PersonX wanted to be fitter
Update: PersonX likes to work out
Example Output:
strengthener