We are given three brothers named John, James, and William. John and James always lie, but William always tells the truth. The three are indistinguishable in appearrance. You meet one of the brothers on the street on day and wish to find out whether he is John because John owes you money. You are aloud to ask him one question answerable by yes or no, but it may not contain more than 3 words. What question do you ask?