In a family, there are a father, a mother, two sons, and a daughter. If the father is a teacher and the mother is a doctor, which of the following is true?
A, B, C, D, and E are five different fruits. A is sweeter than B but not as sweet as C. D is sourer than E but sweeter than B. Which fruit is the sweetest?
There are four animals: a dog, a cat, a rabbit, and a turtle. The dog is faster than the cat but slower than the rabbit. The turtle is the slowest. Which animal is the fastest?