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.

Premise: PersonX touches PersonY on the shoulder
Hypothesis: As a result, PersonX feels gregarious
Update: PersonX wants to fight PersonY.
weakener

Premise: PersonX wants to buy it
Hypothesis: As a result, PersonX wants to show it off to his friends
Update: It is extremely aesthetically pleasing.
strengthener

Premise: PersonX crosses the aisle
Hypothesis: Because PersonX wanted to be a peace maker
Update: PersonX sits near the middle of the congress chamber
strengthener