TASK DEFINITION: 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.
PROBLEM: Premise: A man in a blue shirt is pushing another man in a white shirt during football practice.
Hypothesis: The offensive man is blocking the defense.
Update: The man in white weighs 300 pounds

SOLUTION: strengthener

PROBLEM: Premise: Musicians doing with they do best.
Hypothesis: All of the musicians are dressed in black.
Update: The musicians are playing at a party.

SOLUTION: weakener

PROBLEM: Premise: A band plays a rock show to a bar audience.
Hypothesis: A band is playing their first show.
Update: The band is nervous and inexperienced.

SOLUTION:
strengthener