One day, a man was sitting in his office on the 19th floor of a building when a man came running in to his office and shouted, "John, your daughter, Anna just died in an accident right opposite this building". The gentleman was in panic. Not knowing what to do, he jumped out through his office window. While coming down, when he was near the 14th floor, he remembered he does not have a daughter named Anna. When he was near the 7th floor, he remembered he was not married yet. When he was about to hit the ground, he remembered he was not John!