Bob is cold. Bob is rough. Bob is white. Charlie is not big. Charlie is not cold. Charlie is not quiet. Charlie is rough. Charlie is round. Charlie is young. Dave is big. Dave is not quiet. Dave is rough. Dave is round. Dave is white. Fiona is not round. Fiona is white. If Fiona is big then Fiona is round. If something is rough then it is white. Cold things are round. If something is big and not young then it is not cold. All white, quiet things are not cold. If Fiona is young then Fiona is not white. If Dave is not round then Dave is cold. If something is rough and not round then it is white.
Charlie is not quiet.