Bob is not green. Bob is nice. Bob is quiet. Bob is red. Bob is young. Fiona is green. Fiona is nice. Fiona is quiet. Fiona is red. Fiona is white. Fiona is young. Harry is nice. Harry is quiet. Harry is red. Harry is white. If Bob is young and Bob is red then Bob is smart. If something is young then it is quiet. All white, green things are quiet. All white, nice things are red. If Fiona is not young then Fiona is not smart. If something is red then it is nice.
Harry is not young.