question: Greta yells across the canyon in the cool morning and again in the hot afternoon. The sound likely traveled _____ in the morning.
choices.text: slower not as slow
choices.label: A B
para: For a given medium, sound has a slower speed at lower temperatures.
para_anno.effect_prop: temperature of medium
para_anno.cause_dir_str: lower
para_anno.effect_dir_str: slower
para_anno.cause_dir_sign: LESS
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: speed for a medium
question_anno.more_effect_dir: hot
question_anno.less_effect_dir: cool
question_anno.less_cause_prop: sound traveled
question_anno.more_effect_prop: afternoon
question_anno.less_effect_prop: morning
question_anno.less_cause_dir: morning