question: bank:interest
choices.label: A B C D
choices.text: cow:calf school:student hospital:doctor factory:worker
explanation: money in the "bank" can generate "interest" "cow" can produce "calf" "school" is the place where "students" take classes, and "school" cannot produce "students" "hospital" is where "doctors" work, and "hospitals" cannot produce "doctors" a "factory" is where "workers" work, and a "factory" cannot produce "workers"
relation: bank interest R3.10
relation: school student R3.10
relation: hospital doctor R3.10
relation: factory worker R3.10