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 young man in a blue shirt with white shorts volleys a tennis ball.
Hypothesis: A sad man in a blue shirt with white shorts volleys a tennis ball.
Update: He is losing the match.

SOLUTION: strengthener

PROBLEM: Premise: Someone in an orange vest sits with a blue and yellow device in his hand.
Hypothesis: This man is a construction worker.
Update: The man is sitting on a runway of an airport

SOLUTION: weakener

PROBLEM: Premise: Some patrons at a some sort of diner.
Hypothesis: The patrons are ordering food.
Update: They are speaking to their waitress.

SOLUTION:
strengthener