Task: Question Answering
Input (English): Leucine is one of the amino acids your body needs but cannot make. Which of these happens so that the human body can obtain leucine?  
 (A) The body converts other amino acids to leucine. (B) The body stores carbohydrates containing leucine. (C) The body breaks down fatty acids to obtain leucine. (D) The body digests protein in food to obtain leucine.
Output (English): D