In a family, there are three siblings: X, Y, and Z. X is a painter, Y is a musician, and Z is the youngest. If Y is older than Z, who is the oldest sibling?
In a family of four members A, B, C, and D, A is a doctor, B is a teacher, C is a lawyer, and D is a student. If A is married to B and they have two children, who is the parent of C?