Dave is green. Dave is kind. Dave is smart. Dave is white. Erin is green. Erin is not quiet. Erin is not rough. Erin is smart. Fiona is smart. Fiona is white. Harry is kind. Harry is rough. Young people are white. If someone is quiet then they are kind. All quiet people are white. All rough, quiet people are young. If someone is white then they are kind. If someone is white and smart then they are not young. If someone is young and green then they are smart. If someone is smart and not white then they are not young.
Fiona is quiet.