Bob is blue. Bob is quiet. Bob is rough. Charlie is cold. Charlie is quiet. Charlie is rough. Charlie is round. Charlie is white. Fiona is cold. Fiona is not quiet. Fiona is red. Fiona is round. Harry is rough. Harry is round. If something is blue and cold then it is white. If something is white and red then it is blue. Round things are cold. Blue things are round. If something is white then it is red. Cold things are white. If Fiona is rough then Fiona is cold. If Harry is blue and Harry is red then Harry is quiet. If Harry is rough and Harry is not quiet then Harry is blue.
Charlie is not blue.