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: A person is riding a red motorcycle around a track.
Hypothesis: people are racing dirt bikes
Update: The person is being filmed by news cameras

Ex Output:
strengthener


Ex Input:
Premise: a girl in a red jacket playing a guitar at a fair or circus.
Hypothesis: The girl makes her living by playing music.
Update: The girl is on stage with a crowd around her

Ex Output:
strengthener


Ex Input:
Premise: Cheerleaders build a pyramid near the goal-line.
Hypothesis: Cheerleaders practice on the field before their big day.
Update: Cheerleaders practice dancing on the field before their big night at the prom.

Ex Output:

weakener