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 man in yellow rain gear on a boat
Hypothesis: A man is getting soaked on the boat.
Update: The man wipes his face with a towel.

Ex Output:
strengthener


Ex Input:
Premise: Two young men in a purple and white shirt running on grass.
Hypothesis: Two young men are playing tag.
Update: The men have frisbees.

Ex Output:
weakener


Ex Input:
Premise: A clown in a street is playing with a hula hoop.
Hypothesis: The clown is entertaining people
Update: The street is empty.

Ex Output:

weakener