Charlie is blue. Charlie is furry. Charlie is round. Dave is blue. Dave is not cold. Dave is furry. Dave is not red. Dave is rough. Dave is round. Dave is young. Fiona is furry. Fiona is not red. Fiona is rough. Gary is cold. Gary is furry. Gary is young. All rough, round things are not cold. If something is not cold then it is rough.
Fiona is not cold.