Charlie is blue. Charlie is furry. Charlie is quiet. Charlie is red. Charlie is not rough. Charlie is not smart. Charlie is white. Fiona is not blue. Fiona is furry. Fiona is quiet. Fiona is red. Fiona is not rough. Fiona is not smart. Fiona is white. If something is not quiet then it is white. If something is smart then it is blue. If Fiona is white and Fiona is quiet then Fiona is not blue. If Fiona is rough and Fiona is not quiet then Fiona is blue. All white things are furry. If Charlie is smart then Charlie is white. If Fiona is furry and Fiona is not red then Fiona is white. If something is rough and not blue then it is not white.
Fiona is not rough.