The teacher is first, and St. Peter asks, "Name the famous ship that was sunk by an iceberg?" "Phew, that one's easy," says the teacher, "The Titanic." "Alright," said St.Peter, "you may pass."
Then the thief got his question: "How many died on the Titanic?" The thief replied, "That's a toughy, but fortunately I just saw the movie. The answer is 1500 people." And so he passed through.
Last, St. Peter gave the lawyer his question: "Name them."