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 buys a cake
Hypothesis: Before, PersonX needed to go to shop
Update: PersonX sits in front of a computer

Ex Output:
weakener


Ex Input:
Premise: PersonX starts a food fight
Hypothesis: As a result, PersonX wants to keep fighting
Update: PersonX is having a ton of fun.

Ex Output:
strengthener


Ex Input:
Premise: PersonX finishes the work
Hypothesis: PersonX is seen as proud
Update: The work was praised by every critic that saw it.

Ex Output:
strengthener