question: If Mary is building a rocket and she wants it to fly as high as possible, what should she do to the mass of the rocket?
choices.text: increase it decrease it
choices.label: A B
para: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.
para_anno.effect_prop: fly higher
para_anno.cause_dir_str: reduced
para_anno.effect_dir_str: higher
para_anno.cause_dir_sign: LESS
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: mass of the rocket
question_anno.more_effect_dir: fly
question_anno.less_cause_prop: mass
question_anno.more_effect_prop: higher