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 is running late for school
Hypothesis: As a result, PersonX wants to learn at school
Update: Person X walks very slowly, thinking about turning around.
Example Output: weakener

Example Input: Premise: PersonX lives with PersonX's father
Hypothesis: As a result, PersonX feels a child
Update: PersonX's father needs a caretaker.
Example Output: weakener

Example Input: Premise: PersonX gives PersonY assurance
Hypothesis: Before, PersonX needed to think things will be ok
Update: PersonX just looked at PersonY's x-rays.
Example Output:
strengthener