question: If we have a bag of feathers and a bag of bricks of the same volume, the lighter item will be the
choices.text: feathers bricks
choices.label: A B
para: If we have two materials with the same volume, the material with a higher mass will be more dense.
para_anno.effect_prop: mass
para_anno.cause_dir_str: more
para_anno.effect_dir_str: higher
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: density
question_anno.more_effect_dir: bricks
question_anno.less_effect_dir: feathers