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: Two men play basketball.
Hypothesis: Two men are competing for the last spot on the basketball team.
Update: Two men are competing to become the final teammate on the basketball team this season.

SOLUTION: strengthener

PROBLEM: Premise: Children sit in a classroom holding slates.
Hypothesis: The children are praticing math.
Update: The children are drawing pictures.

SOLUTION: weakener

PROBLEM: Premise: A man in plaid with black sunglasses plays on an acoustic guitar.
Hypothesis: A man in sunglasses plays an acoustic guitar for his girlfriend.
Update: He is playing on a date.

SOLUTION:
strengthener