In a cooking competition, the following events occurred: Chef X started cooking before Chef Y, Chef Z finished after Chef X, and Chef Y finished before Chef Z. What is the correct sequence of finishing?
Five students, P, Q, R, S, and T, presented their projects in a seminar. P presented before Q but after R. S presented after T. What is the correct order of presentations?
In a family of four members A, B, C, and D, A is a doctor, B is a teacher, C is A's sibling, and D is the parent of A and C. Who among them is the teacher?