question: What are ears made of?
choices.text: One can hear sound weater protection tiny hairs coarse grit keratin cartilage
choices.label: A B C D E F G H
fact2: People's ears and bones are made of cartilage.
combinedfact: ears made of cartilage
formatted_question: What are ears made of? (A) One can hear (B) sound (C) weater (D) protection (E) tiny hairs (F) coarse grit (G) keratin (H) cartilage