question: left:right
choices.label: A B C D
choices.text: truth:lie black:white absolute:relative buoyancy:pressure
explanation: "left" and "right" refer to the orientation, which is a category. in addition to "left" and "right", there are also upper and lower sides. "truth" and "lie" are one category and contradict each other. "black" and "white" refer to colors, which are a category. in addition to "black" and "white", there are also red, yellow, etc. "absolute" means that there are no conditions and no restrictions, "relative" means that it exists or changes depending on certain conditions, "absolute" and "relative" are one kind and contradict each other. "buoyancy" is the difference in "pressure" that an object immersed in a liquid or gas experiences up and down, and "buoyancy" corresponds to "pressure".
relation: left right R2.6
relation: truth lie R2.5
relation: black white R2.6
relation: absolute relative R2.5
relation: buoyancy pressure R3.10