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: Young punk rock guitarist, wearing a red lined jacket with a badge, is in front of foggy blue and purple lighting.
Hypothesis: The new popular guitarist stands in front of lighting at his new show
Update: The guitarist is nervous

SOLUTION: strengthener

PROBLEM: Premise: A man on a motorcycle is towing a bicyclist on his bicycle behind him.
Hypothesis: A man on a red motorcycle is towing a bicyclist on a blue bicycle.
Update: The bicyclist's black helmet matches the color of his bike.

SOLUTION: weakener

PROBLEM: Premise: A man in a yellow jersey with a large mustache is playing hockey outside.
Hypothesis: A man is on roller blades.
Update: The man is wearing a helmet and knee pads.

SOLUTION:
strengthener