Charlie is cold. Charlie is quiet. Charlie is red. Charlie is smart. Dave is cold. Dave is white. Dave is young. Fiona is blue. Fiona is cold. Fiona is red. Fiona is smart. Fiona is white. Smart things are quiet. If Charlie is cold then Charlie is quiet. If Fiona is red and Fiona is cold then Fiona is blue. All quiet, blue things are young. All blue, cold things are smart. If Charlie is smart then Charlie is young. If something is red then it is white. If something is smart and blue then it is cold.
Fiona is not white.