question: athletes:doping
choices.label: A B C D
choices.text: contract:break doctor:misdiagnosed copycat:counterfeiting referee:black whistle
explanation: "athletes" cannot use "doping", "athletes" are characters. "contract" can be "broken", but "contract" is not a character. "misdiagnosis" is a problem that often occurs in clinical work. "doctors" may "misdiagnose", but "doctors" cannot "misdiagnose". the meaning of "copycat" is similar to "counterfeiting", and "copycat" is not a character. the "referee" cannot blow the "black whistle", and the "referee" is a character.
relation: athletes doping R3.10
relation: copycat counterfeiting R1.1
relation: referee black whistle R3.10