question: nation:totem
choices.label: A B C D
choices.text: country:country flag human:spirit porcelain:texture gunpowder:nitric acid
explanation: the symbol of "nation" is the "totem". the symbol of the "country" is the "country flag". the inner psychological state of "human" is "spirit", and the symbol of "human" is not "spirit". one of the evaluation criteria of "porcelain" is "texture", and the symbol of "porcelain" is not "texture". the main component of "gunpowder" is potassium nitrate, not "nitric acid", and there is no obvious logical relationship between "gunpowder" and "nitric acid".