question: wheelchair:car
choices.label: A B C D
choices.text: highway:road train:waterwheel cable car:ropeway aircraft:tank
explanation: "wheelchair" and "car" belong to the same category. "highway" is also called a "road". there is no obvious logical relationship between "trains" and "waterwheels". "cableway" is also called a "cable car". "aircraft" and "tank" are the same kind.
relation: wheelchair car R2.4
relation: highway road R2.1
relation: ropeway cable car R2.1
relation: aircraft tank R2.4