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 group of workers are waiting to be picked up.
Hypothesis: A group of workers are waiting for a ride to their meeting while checking their watches.
Update: they stare at the clock on the tower.

SOLUTION: weakener

PROBLEM: Premise: A car wash worker cleaning the interior of the wheel.
Hypothesis: a person cleaning for a tip
Update: Wheel interiors are not included as a standard car wash feature.

SOLUTION: strengthener

PROBLEM: Premise: Black man working on a plywood stage.
Hypothesis: A man is cleaning the theater
Update: The man is holding a mop next to a bucket of soapy water.

SOLUTION:
strengthener