Bob is green. Bob is kind. Bob is quiet. Bob is red. Bob is rough. Bob is white. Bob is young. Fiona is not green. Fiona is kind. Fiona is not quiet. Fiona is red. Fiona is rough. Fiona is white. Fiona is young. All rough people are red. Young people are white. If Bob is not white and Bob is not kind then Bob is young.
Fiona is rough.