In a race, there are six participants: P, Q, R, S, T, and U. P finishes before Q but after R. S finishes before T but after U. Which participant finishes last?
A group of animals consists of a cat, a dog, a rabbit, and a bird. The cat is not the smallest, and the dog is larger than the rabbit but smaller than the bird. Which animal is the smallest?
A, B, C, D, and E are five students who scored the following marks: A scored more than B but less than C. D scored less than E but more than A. Who scored the least?