question: fingerprint:key:password
choices.label: A B C D
choices.text: bus:subway:passenger ship red rose:white rose:flower cash:credit card:mobile rice paper:brush:wolf hair
explanation: "fingerprints", "keys" and "passwords" are all of the same kind. "bus", "subway" and "passenger ship" are all of the same kind. both "red rose" and "white rose" are a kind of "flower", and "red rose" and "white rose" are of the same kind. "cash" and "credit card" are of the same kind, and "mobile phone" should have a payment function in an app, "mobile phone" and "cash", and "credit card" are not of the same kind. "wolf" is a kind of "writing brush".
relation: fingerprint key password R2.4
relation: bus subway passenger ship R2.4
relation: white rose white rose R2.4
relation: cash credit card R2.4
relation: wolf hair brush R2.2