TASK DEFINITION: Creating a multiple-choice question from the given context and a 'group' which indicate the focus of the question. The question must come first, separated by <sep> from the candidate answers. The answer to the question does not have to exist in the context.
PROBLEM: context: A person is trying to bounce a rubber ball. They drop a first ball onto concrete, a second ball onto leaves, a third ball onto foam, and a fourth ball onto grass.<sep>group: bouncing

SOLUTION: question: Which ball bounces the highest?<sep>A: concrete<sep>B: leaves<sep>C: foam<sep>D: grass

PROBLEM: context: A person is trying to bounce a rubber ball. They drop a first ball onto steel, a second ball onto rubber, a third ball onto carpet, and a fourth ball onto brick.<sep>group: bouncing

SOLUTION: question: Which ball bounces the least?<sep>A: steel<sep>B: rubber<sep>C: carpet<sep>D: brick

PROBLEM: context: A person is trying to bounce a rubber ball. They drop a first ball onto rubber, a second ball onto brick, a third ball onto foam, and a fourth ball onto asphalt.<sep>group: bouncing

SOLUTION:
question: Which ball bounces the least?<sep>A: rubber<sep>B: brick<sep>C: foam<sep>D: asphalt