question: umbrella:raincoat
choices.label: A B C D
choices.text: cash:check air conditioning:radiator pen:pencil mosquito coils:mosquito nets
explanation: both "umbrella" and "raincoat" are rainproof tools, and "umbrella" has other functions, such as a sunshade. both "cash" and "check" are payment instruments, but "cash" has no other function. both "air conditioning" and " radiator" are heating tools, and "air conditioning" has other functions, such as cooling. both "pen" and "pencil" are writing instruments, but "pen" has no other function. both "mosquito coils" and "mosquito nets" are anti-mosquito tools, but "mosquito coils" have no other functions.
relation: umbrella raincoat R2.4
relation: cash check R2.4
relation: air conditioning radiator R2.4
relation: pen pencil R2.4
relation: mosquito coils mosquito nets R2.4