question: Rich was examining a cliff face. Which part of the cliff is older, geologically speaking?
choices.text: the base the top
choices.label: A B
para: The upper rock layers are much younger.
para_anno.effect_prop: age of rocks
para_anno.cause_dir_str: upper
para_anno.effect_dir_str: younger
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: elevation of layers
question_anno.more_effect_dir: older
question_anno.less_cause_prop: part of the cliff
question_anno.more_effect_prop: part of the cliff