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 writing on a chalkboard in a empty classroom.
Hypothesis: A man is doing math on a chalkboard.
Update: the person is a talented drawer.

Ex Output:
weakener


Ex Input:
Premise: One man is working on a wristwatch while another checks his work.
Hypothesis: One man is working on a wrist watch to repair it.
Update: The man is using tiny tools.

Ex Output:
strengthener


Ex Input:
Premise: An older man poses near wooden bowls on display.
Hypothesis: An artist is showing off some of his decorative bowls.
Update: There are prices displayed next to the bowls.

Ex Output:

strengthener