question: Eric rubs together tissue paper and then sandpaper. The smoother tissue paper has _____ friction than the sandpaper.
choices.text: less more
choices.label: A B
para: Rougher surfaces have more friction between them than smoother surfaces.
para_anno.effect_prop: friction between them
para_anno.cause_dir_str: rougher
para_anno.effect_dir_str: more
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: rougher surfaces
question_anno.more_effect_dir: more
question_anno.less_effect_dir: less
question_anno.less_cause_prop: paper
question_anno.more_effect_prop: friction
question_anno.less_effect_prop: friction
question_anno.less_cause_dir: friction