question: father-in-law:scientist
choices.label: A B C D
choices.text: man:woman minerals:petroleum doctor:children young women:athletes
explanation: some "father-in-law" is "scientist", and some "scientist" is "father-in-law". "men" and "women" are completely complementary "petroleum" is a kind of "mineral". a "doctor" can treat a "child". "children" cannot diagnose and treat "doctors". "young women" can be "athletes", and "athletes" can also be "young women".