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 biker is racing downhill.
Hypothesis: driving competetion is going on
Update: Police officers on bikes are chasing the person

SOLUTION: weakener

PROBLEM: Premise: A yellow car is creating smoke by spinning its tires.
Hypothesis: A car is being driven dangerously in the street.
Update: The driver doesn't realize he left the parking brake on before exiting the lot.

SOLUTION: weakener

PROBLEM: Premise: Bare chested Black men play drums on makeshift paint buckets to a pleased crowd.
Hypothesis: A tall human playing
Update: The person playing is having trouble seeing over the person in front of him.

SOLUTION:
weakener