Four people: John, Lisa, Mark, and Sarah have different favorite colors: Red, Blue, Green, and Yellow. John does not like Red or Blue, Lisa does not like Green, Mark likes Blue, and Sarah likes Yellow. What color does John like?
Five people - X, Y, Z, W, and V - are sitting in a row. X is to the left of Y. Z is to the right of W. V is not at either end. Who is sitting in the middle?