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 wearing all black plays a coffee-burst bass guitar with a band.
Hypothesis: A man is playing with his band in a garage.
Update: There are many onlookers seated in the audience.

SOLUTION: weakener

PROBLEM: Premise: Two out of 6 swimmers are battling for the win.
Hypothesis: Two swimmers are competing while the others are watching.
Update: All six swimmers are in the pool swimming in their lanes.

SOLUTION: weakener

PROBLEM: Premise: A young boy stands near the water in a muddy river.
Hypothesis: A boy is about to dive into a river.
Update: The boy is wearing swim trunks.

SOLUTION:
strengthener