In a family of six members A, B, C, D, E, and F, A is the father of B. C is the mother of B and D. E is the sister of B. F is the brother of D. How is E related to F?
A is married to B. They have two children, C and D. C is a doctor and D is a lawyer. If B is a teacher, what is A's profession if he is not in the same profession as B?