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 an air purifier
Hypothesis: Because PersonX wanted to shopping
Update: PersonX has trouble breathing at home.

Ex Output:
weakener


Ex Input:
Premise: PersonX opens all PersonX's presents
Hypothesis: PersonX then cheers
Update: PersonX gets vegetables for presents.

Ex Output:
weakener


Ex Input:
Premise: PersonX decides to buy it
Hypothesis: As a result, PersonX feels greedy
Update: PersonX leaves a few donuts for the customers behind him.

Ex Output:
weakener