Bob is blue. Bob is kind. Bob is quiet. Bob is not rough. Bob is young. Dave is big. Dave is kind. Dave is young. Fiona is round. Fiona is not young. Quiet, kind people are big. If someone is rough and not quiet then they are blue. If Fiona is young and Fiona is kind then Fiona is round. If someone is rough and not kind then they are blue. If Dave is blue and Dave is rough then Dave is young. Quiet, round people are rough. All rough people are big. If someone is not young then they are not kind.
Bob is young.