The FIRST and the LAST sentences of the paragraph are numbered 1 & 6. The others, labelled as P, Q, R and S are given below: 1. Suppose I know someone, Smith. P. One day you come to me and say: "Smith is in Cambridge." Q. I inquire, and find you stood at Guildhall and saw at the other end a man and said: "That was Smith." R. I'd say: "Listen. This isn't sufficient evidence." S. I've heard that he has been killed in a battle in this war. 6. If we had a fair amount of evidence he was killed I would try to make you say that you're being credulous. Which of the following combinations is the MOST LOGICALLY ORDERED?