question: what does an odometer measure?
choices.text: time distance visibility backbones male gametes antigens speed calibrated
choices.label: A B C D E F G H
fact2: Odometers and speedometers measure distance and speed.
combinedfact: an odometer is used to measures distances 
formatted_question: what does an odometer measure? (A) time (B) distance (C) visibility (D) backbones (E) male gametes (F) antigens (G) speed (H) calibrated