Dave is blue. Dave is furry. Dave is kind. Dave is red. Dave is young. Fiona is blue. Fiona is not cold. Fiona is furry. Fiona is kind. Fiona is red. Fiona is rough. Fiona is young. If Dave is cold and Dave is furry then Dave is young. Young things are red. If Dave is red and Dave is blue then Dave is cold. If something is kind and cold then it is rough. All kind things are young. If something is blue then it is furry.
Fiona is not rough.