choices.label: A B C D
choices.text: rice:food grass:trees careless:confidence fish:lake
explanation: "color" includes "black". "food" includes "rice". plants include "grass" and "trees.". "careless" means sloppy, "careless" and "confidence" have no obvious logical relationship. "lake" is the living environment of "fish".
relation: black color R2.2
relation: rice food R2.2
relation: grass trees R2.4