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 borrows the car
Hypothesis: PersonX is seen as thankful
Update: X crashes the car.
weakener

Premise: PersonX warns PersonY
Hypothesis: PersonX is seen as concerned
Update: PersonX goes specifically to PersonY
strengthener

Premise: PersonX runs through PersonY's head
Hypothesis: Then, they call their friend
Update: PersonY misses PersonX being alive.
weakener