question: What can you scratch to measure?
choices.text: stoma bone yardsticks diamonds rulers distance hairs measuring tape
choices.label: A B C D E F G H
fact2: Diamonds are so hard because of the shape of a diamond's structure.
combinedfact: measuring diamonds requires scratching them
formatted_question: What can you scratch to measure? (A) stoma (B) bone (C) yardsticks (D) diamonds (E) rulers (F) distance (G) hairs (H) measuring tape