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 woman serving a tennis ball.
Hypothesis: A woman is playing tennis with her husband.
Update: She has a basket of balls to practice with alone.

Ex Output:
weakener


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: A man rocks out on stage with his guitar.
Hypothesis: A man is playing for his band.
Update: There are no other musicians in the room.

Ex Output:

weakener