Fiona is big. Fiona is blue. Fiona is quiet. Fiona is rough. Fiona is round. Fiona is white. Fiona is young. Harry is big. Harry is blue. Harry is quiet. Harry is rough. Harry is round. Harry is white. Harry is young. All rough, young people are white. If Fiona is quiet and Fiona is big then Fiona is rough. If someone is white and quiet then they are round.
Fiona is not rough.