Charlie is big. Charlie is blue. Charlie is quiet. Charlie is round. Charlie is smart. Charlie is white. Charlie is young. Fiona is big. Fiona is blue. Fiona is quiet. Fiona is round. Fiona is smart. Fiona is white. Fiona is young. If Fiona is blue then Fiona is young. All smart things are quiet. Young things are smart. If Charlie is white then Charlie is blue. Quiet, young things are big. All round, smart things are young. All smart things are big. If Charlie is white and Charlie is young then Charlie is quiet.
Fiona is not smart.