Five events occurred in a sequence: E1, E2, E3, E4, and E5. E1 happened before E3 but after E2. E4 happened after E3 but before E5. What is the correct order of the events?
In a race, five participants A, B, C, D, and E finished in the following order: A finished before C but after B. D finished before E. What is the sequence of the participants from first to last?
A, B, C, and D are four people who attended a seminar on different days: Monday, Tuesday, Wednesday, and Thursday. A attended before C but after B. D attended on Wednesday. What day did C attend the seminar?
In a family, there are four members: P, Q, R, and S. P is the father of Q, Q is the mother of R, and S is the sister of R. What is the relationship between P and S?