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 starts coughing
Hypothesis: Before, PersonX needed sitting on chair
Update: They had to see the doctor

Ex Output:
strengthener


Ex Input:
Premise: PersonX buys a guitar
Hypothesis: PersonX is seen as happy
Update: The guitar came broken

Ex Output:
weakener


Ex Input:
Premise: PersonX gets some food
Hypothesis: Before, PersonX needed to go to the store
Update: PersonX's pantry is empty.

Ex Output:

strengthener