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 hears a loud crack
Hypothesis: As a result, PersonX wants to cover their head
Update: PersonX is standing outdoors.
Example Output: weakener

Example Input: Premise: PersonX dresses for school
Hypothesis: Because PersonX wanted to go
Update: PersonX is the type of person who enjoys school.
Example Output: strengthener

Example Input: Premise: PersonX follows PersonY's advice
Hypothesis: PersonX then doesn't ask for advice from Person Y again.
Update: PersonX succeeded with the task.
Example Output:
weakener