question: science:social science:natural science
choices.label: A B C D
choices.text: car:truck:engineering vehicle secondary industry:building industry:energy industry hospital:doctor:nurse community:housing:resident
explanation: the different classifications of "science" are "social sciences" and "natural sciences"; "social sciences" and "natural sciences" are of the same kind, and "science" includes "social sciences" and "natural sciences". "cars", "wagons" and "engineering vehicles" are of the same kind. "building industry" and "energy industry" are the same kind, which is a type of "secondary industry". "doctors" and "nurses" are the same kind, and a "hospital" is where "doctors" and "nurses" work. a "house" is a building; a "resident" is a group of people, and a "house" and a "resident" are not the same kind.
relation: social science natural science R2.4
relation: car truck engineering vehicle R2.4
relation: building industry energy industry R2.4
relation: doctor nurse R2.4