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 rides PersonY's horse
Hypothesis: Before, PersonX needed to go where the horse is
Update: PersonX is parked outside Y’s house

Ex Output:
strengthener


Ex Input:
Premise: PersonX waits anxiously
Hypothesis: Because PersonX wanted wife is having a baby
Update: PersonX is at a dentist office.

Ex Output:
weakener


Ex Input:
Premise: PersonX is driving home from school
Hypothesis: Because PersonX wanted to get back to the house
Update: PersonX doesn't want to worry their parent.

Ex Output:
strengthener