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: Three street musicians wearing brown coats play the drums and trumpet in front of a store.
Hypothesis: three street musicians are playing jazz in front of a store.
Update: the musicians cover a country song

SOLUTION: weakener

PROBLEM: Premise: Nine women in blue and purple dresses and one man wearing a purple shirt and black pants, clap while a man dressed in black dances.
Hypothesis: There is a group watching a street performance.
Update: The man in black dances underneath a street sign as people watch from the sidewalk.

SOLUTION: strengthener

PROBLEM: Premise: Children are playing in a swimming pool while two adult men watch them.
Hypothesis: Kids are learning to swim.
Update: The kids are repeating the arm motions of an adult in front of them in the pool.

SOLUTION:
strengthener