Bob is rough. Bob is round. Bob is white. Charlie is blue. Charlie is cold. Charlie is nice. Charlie is quiet. Charlie is round. Dave is cold. Dave is nice. Dave is white. Harry is cold. Harry is not nice. Harry is rough. Harry is round. Harry is white. If something is cold and not round then it is not blue. If something is blue then it is rough. If Dave is white and Dave is not quiet then Dave is cold.
Dave is not rough.