question: matches:lighters:make fire
choices.label: A B C D
choices.text: coal stove:gas stove:cooking hoe:cart:cultivating land mirror:comb:grooming gleditsia sinensis:do the laundry:wash clothes
explanation: "making fire" is the function of "matches" and "lighters". "cooking" is the function of "coal stove" and "gas stove". "coal stove" and "gas stove" have the same function. "cultivating land" is the function of "hoes", but the function of "carts" is to carry people or goods. "grooming" is the function of "combs", but the function of "mirrors" is to let people tidy themselves up, instead of "grooming". the skin of "gleditsia sinensis" is a natural industrial washing product, which can be used for "washing clothes". but the original meaning of "doing the laundry "doing the laundry" is also called "washing clothes".
relation: matches lighters R2.4
relation: coal stove gas stove R2.4
relation: hoe cultivating land R2.4
relation: comb grooming R3.10
relation: gleditsia sinensis wash clothes R3.10
relation: wash clothes do the laundry R2.1