question: syringe:injector:medical device
choices.label: A B C D
choices.text: rack:jack:lifting equipment submarine:nuclear submarine:nuclear reactor aircraft:propeller:propulsion swimsuit:bikini:swimwear
explanation: "injector" includes "syringe", and "injector" belongs to "medical device". "jack" includes "rack", and "jack" belongs to "lifting equipment". "nuclear submarine" is a type of "submarine", and the component of "nuclear submarine" does not have "submarine". a "propeller" is part of an "aircraft", a component of a "propeller" does not have an "aircraft" a "bikini" is a type of "swimsuit", and the components of a "bikini" do not have a "swimsuit".