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 boy in a red shirt riding a bike.
Hypothesis: A boy is riding a bike to school.
Update: It is a lovely Sunday afternoon.

Ex Output:
weakener


Ex Input:
Premise: Two men are kidding around as a woman watches them.
Hypothesis: A woman watches men laughing at the bar.
Update: The two men are fighting each other.

Ex Output:
weakener


Ex Input:
Premise: Two elderly people sit in handicapped chairs on a train.
Hypothesis: Two people are on a long train ride.
Update: The train is a cross country route.

Ex Output:

strengthener