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: 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: Two children, one in red and one in blue, making snow angels.
Hypothesis: The children are making the angels for their parents.
Update: The children are at school.

Ex Output:
weakener


Ex Input:
Premise: A man is standing in a room in which various pots and crafts are scattered behind him with another man while a group of people enter the room behind him.
Hypothesis: A tour group enters the studio of two artists to view their works.
Update: The group of people are art school students.

Ex Output:

strengthener