Bob is young. Charlie is cold. Charlie is not quiet. Charlie is red. Charlie is white. Fiona is big. Fiona is young. All rough, young people are cold. If Bob is red and Bob is not white then Bob is big. If Charlie is red and Charlie is big then Charlie is not cold. If someone is not young then they are rough. If someone is white then they are red. If someone is quiet and not rough then they are cold.
Bob is not cold.