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 throws water
Hypothesis: PersonX then throws more
Update: PersonX started a water fight.

Ex Output:
strengthener


Ex Input:
Premise: PersonX opens a new bank account
Hypothesis: Because PersonX wanted to get a better deal
Update: X compared interest rates among local banks.

Ex Output:
strengthener


Ex Input:
Premise: PersonX meets PersonY for dinner
Hypothesis: Because PersonX wanted to be social
Update: PersonX is looking for a girlfriend

Ex Output:

strengthener