question: aircraft carrier:warship:ocean
choices.label: A B C D
choices.text: bomber:fighter plane:sky spaceship:space station:space tank:missile:land submarine:torpedo:ocean
explanation: an "aircraft carrier" is a "warship" that fights in the "ocean" "bombers" belong to "fighter plane", and "fighters" fight in the "sky" spacecraft includes "spaceship" and "space station" weapons include "tanks" and "missiles" "torpedoes" in some "submarines"
relation: aircraft carrier warship R2.2
relation: warship ocean R3.6
relation: bomber fighter plane R2.2
relation: fighter plane sky R3.6
relation: spaceship space station R2.4
relation: tank missile R2.4
relation: submarine torpedo R3.10