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, that is, it makes you much less likely to believe the hypothesis is true. A strengthener is a statement that strengthens the hypothesis, that is, it makes you much more likely to believe the hypothesis is true. Your task is to answer with 'strengthener' or 'weakener' if the update strengthens or weakens the hypothesis, respectively.

Ex Input:
Premise: Various people out and about in a public place on an autumn day.
Hypothesis: A group of classmates out and about in public on an autumn day.
Update: There is a school bus parked nearby.

Ex Output:
strengthener


Ex Input:
Premise: A long-haired young man skateboarding on the rails on a cloudy day.
Hypothesis: The boy is going to do a pop-shove it.
Update: The man is in a hurry to get to his job.

Ex Output:
weakener


Ex Input:
Premise: One football player is tackling another and the ball is sent flying.
Hypothesis: Football players playing outside and man catch flying ball.
Update: Everyone is slipping on the ground.

Ex Output:

weakener