question: what used propulsion for flying?
choices.text: dogs jellyfish humans emu Apollo 12 ostrich mammals vertebrates
choices.label: A B C D E F G H
fact2: When Apollo 12 took off, the spacecraft was hit by lightning.
combinedfact: propulsion is used for flying by Apollo 12
formatted_question: what used propulsion for flying? (A) dogs (B) jellyfish (C) humans (D) emu (E) Apollo 12 (F) ostrich (G) mammals (H) vertebrates