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 is helping another man after a fall on the street.
Hypothesis: The man is his brother.
Update: The men look almost identical to each other.

Ex Output:
strengthener


Ex Input:
Premise: Woman in Jacket with hood up walks alone down crowded street.
Hypothesis: The lady is preparing to walk in a bank where she will steal the pen they let you borrow to sign checks.
Update: The woman finds a pen on the ground.

Ex Output:
weakener


Ex Input:
Premise: The man jumped in the air with his motorcycle.
Hypothesis: The man is performing a stunt.
Update: The man is upside down and sideways at the same time

Ex Output:

strengthener