Charlie is blue. Charlie is quiet. Erin is blue. Erin is nice. Erin is young. Fiona is blue. Fiona is nice. All nice, round things are young. If something is young then it is nice. If something is young and blue then it is round. If Fiona is blue and Fiona is nice then Fiona is young. If something is round then it is blue. All quiet, cold things are young.
Erin is not blue.