question: movement:watch
choices.label: A B C D
choices.text: host:computer bottle cap:wine bottle compressor:air conditioner axles:tires
explanation: the "movement" is part of the "watch" and is the core component. "host" is a part of "computer", "host" is not the core part of "computer". "bottle cap" and "wine bottle" are used together, "botle cap" is not part of "wine bottle". the "compressor" is part of the "air conditioner" and is the core component. both "axles" and "tires" are part of the car, "axles" are not part of "tires".
relation: movement watch R2.3
relation: host computer R2.3
relation: bottle cap wine bottle R3.10
relation: compressor air conditioner R2.3
relation: axles tires R2.4