question: fermentation:fine wine
choices.label: A B C D
choices.text: rust:wet green mountains:clear water debt:poverty refinement:gasoline
explanation: "fermented" grain can be made into "fine wine", and the production process of "fine wine" is "fermentation". "rusty" is because of "wet". the "green mountains" and "clear water" are the same kind. "debt" is because of "poverty". crude oil is "refined" to obtain "gasoline", and the production process of "gasoline" is "refining".
relation: fine wine fermentation R3.10
relation: wet rust R5.1
relation: green mountains clear water R2.4
relation: poverty debt R5.1
relation: gasoline refinement R3.10