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 studies for weeks
Hypothesis: Before, PersonX needed to go to classes
Update: PersonX does online remote learning.
Example Output: weakener

Example Input: Premise: PersonX flies too close to the sun
Hypothesis: Because PersonX wanted to be daring
Update: PersonX fell asleep while the plane was on autopilot
Example Output: weakener

Example Input: Premise: PersonX changes PersonY's lives
Hypothesis: Because PersonX wanted to help out
Update: PersonX wants to be seen more positively
Example Output:
strengthener