Among A, B, and C, one is a doctor, one is a teacher, and one is an engineer. D, E, and F are their wives (not necessarily in the same order). E marries an engineer. The husband of F is not a doctor. B is a teacher. D is married to C, who is not an engineer. Which of the following statements is true?

Seven boxes B, D, E, P, S, T and W are kept one over the other but not necessarily in the same order. W is kept second from the bottom. Only three boxes are kept between W and B. P is kept at one of the positions below W. Only D is kept between B and S. E is kept at one of the positions above B. How many boxes are kept between P and E?

Seven boxes, L, M, N, O, Q, R and S, are kept one over the other, but not necessarily in the same order. Only three boxes are kept below L. Only two boxes are kept between L and M. Only Q is kept above S. R is kept at some place below O and at some place above N. Which box is kept at the second position from the bottom?