Charlie is green. Charlie is round. Fiona is quiet. Harry is not big. Harry is nice. Harry is round. Harry is young. All quiet people are not green. If someone is big and round then they are quiet. All nice people are round. If Fiona is round and Fiona is not red then Fiona is big. All big, young people are green. Young people are not green. If someone is quiet then they are not young. If someone is nice and not round then they are not quiet.
Harry is not quiet.