A family has four members: W, X, Y, and Z. W is married to X, and they have two children, Y and Z. If Y is a musician and Z is a painter, what can be said about W and X's professions?
In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions are given: 1) Alice cannot sit next to Bob. 2) Charlie must sit next to David. 3) Eva can sit anywhere. Which of the following arrangements satisfies all conditions?
Among five animals: Lion, Tiger, Bear, Wolf, and Fox, the following conditions are given: The Lion is heavier than the Tiger but lighter than the Bear. The Wolf is lighter than the Fox but heavier than the Tiger. Which animal is the heaviest?