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.

Ex Input:
Premise: PersonX tracks PersonY
Hypothesis: Before, PersonX needed find out PersonY's habits.
Update: X hired a PI.

Ex Output:
strengthener


Ex Input:
Premise: PersonX bullies at school
Hypothesis: As a result, PersonX wants tO GET PUNISHMENT
Update: PersonX challenges the teacher to a fight.

Ex Output:
strengthener


Ex Input:
Premise: PersonX improves PersonX's condition
Hypothesis: As a result, PersonX wants to take medicine
Update: PersonX is allergic to most medications.

Ex Output:
weakener