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 does PersonY's homework
Hypothesis: PersonX then gets caught by the teacher
Update: PersonX and PersonY are at the library.
Example Output: weakener

Example Input: Premise: PersonX tells the story
Hypothesis: As a result, PersonX wants to check that all the young scouts are in their beds
Update: The summer camp counselor walks around the room while telling the ghost story.
Example Output:
strengthener