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 increases PersonY's knowledge
Hypothesis: Because PersonX wanted to educate
Update: PersonX was PersonY's supervisor.
Example Output: weakener

Example Input: Premise: PersonX lays PersonY egg
Hypothesis: PersonX then hatches the egg
Update: PersonX makes PersonY laugh with their impression of a chicken.
Example Output: weakener

Example Input: Premise: PersonX really likes PersonY
Hypothesis: PersonX is seen as excited
Update: They want to date them
Example Output:
strengthener