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: 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

PROBLEM: Premise: A boy in a swimsuit walking in the sand towards the water
Hypothesis: A boy in a swimsuit happily walking
Update: The boy laughs as he walks along.

SOLUTION: strengthener

PROBLEM: Premise: Children joyously doing exercise drills for soccer practice in a wide open field of grass.
Hypothesis: Children joyously doing exercise drills for soccer practice in a wide open field of grass while their coach encourages them.
Update: Their coach is severely poisonous.

SOLUTION:
weakener