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 celebrates PersonY 's day
Hypothesis: As a result, PersonX feels selfless
Update: PersonX smashes the cake into PersonY's face.

Ex Output:
weakener


Ex Input:
Premise: PersonX persuades PersonY to join
Hypothesis: Before, PersonX needed meet PersonY
Update: PersonX and PersonY have been friends for over 20 years.

Ex Output:
weakener


Ex Input:
Premise: PersonX stands with PersonY's back
Hypothesis: Before, PersonX needed to be patient
Update: PersonX is a spine doctor

Ex Output:

weakener