question: universe:solar system:earth
choices.label: A B C D
choices.text: university:philosophy department:professor sky:white cloud:water vapor sun:flare:spot china:guangdong:guangzhou
explanation: the "solar system" is part of the "universe" and "earth" is part of the "solar system". the "philosophy department" may be part of the "university", i.e. the "philosophy department" may not be established in the "university". the "white cloud" may be part of the "sky", that is, there may be no "white cloud" in the "sky". there are "flares" and "spots" in the activity of the "sun". "guangdong" must be part of "china", and "guangzhou" must be part of "guangdong"
relation: universe solar system R2.3
relation: solar system earth R2.3
relation: university philosophy department R2.3
relation: sky white cloud R2.3
relation: flare spot R2.4
relation: china guangdong R2.3
relation: guangdong guangzhou R2.3