In a family of five members A, B, C, D, and E, A is the father of B. C is the mother of B and D is the brother of B. E is the sister of D. How is E related to A?
In a family, there are three children: X, Y, and Z. X is the son of A and B. Y is the daughter of A and B. Z is the son of C, who is the sister of A. How is Z related to X?
A family consists of a father, a mother, and three children: X, Y, and Z. X is the eldest child and is a student. Y is a musician and Z is a painter. If the mother is a doctor, what can be inferred about the father's profession?