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: Little boy in black jacket, kicking leaves.
Hypothesis: A child is happily playing in the leaves.
Update: His face is sullen.

Ex Output:
weakener


Ex Input:
Premise: A man working on a ticket machine as two women stand near.
Hypothesis: Two women buy tickets to on the ferris wheel, so the man waits for the tickets to print.
Update: The women are excited to get on the ride.

Ex Output:
strengthener


Ex Input:
Premise: a baby girl crying in the shoulder of her mother
Hypothesis: The mother is consoling her.
Update: The mother is patting her on the back.

Ex Output:

strengthener