There are four people, they are thieves, robbers, judges, police. The first said: "The second is not a thief. " The second said: "The third is the police. " The third said: "The Four people are not judges, "said the fourth. " I'm not a policeman, and only the police other than me can tell the truth. ". If the fourth person is telling the truth, then the following is true:. ['The first person is the police and the second is a thief.', 'The first is a thief and the fourth is a judge.', 'The third person is the police and the fourth person is the judge.', 'The second person is a robber and the third person is a thief.']