question: jade:carving:jadeware
choices.label: A B C D
choices.text: nature silk:weaving:silk grain:brewing:good wine pig iron:smelting:steel mosquito coil:ignite:smoke
explanation: "jadeware" is made of "jade" through "carving", and "carving" is a process of physical change. "silk" is made of "nature silk" through "weaving", and "weaving" is a process of physical change. "good wine" is "grain" made by "brewing", but "brewing" is a chemical change process. "steel" is "pig iron" made by "smelting", but "smelting" is a chemical change process. "smoke" is generated after "mosquito coils" are "ignited". "ignition" involves chemical changes, and "smoke" is not a finished product.
relation: jade carving jadeware R3.7
relation: nature silk weaving silk R3.7
relation: grain brewing good wine R3.7
relation: pig iron smelting steel R3.7