Dave is cold. Dave is nice. Dave is quiet. Dave is red. Dave is rough. Dave is smart. Dave is white. Fiona is not cold. Fiona is nice. Fiona is quiet. Fiona is not red. Fiona is rough. Fiona is smart. Fiona is white. Red, white people are quiet. If Fiona is red and Fiona is white then Fiona is not smart. If someone is white and not smart then they are cold. If Dave is not white then Dave is not cold. If someone is nice and not smart then they are not cold. If Fiona is quiet and Fiona is not white then Fiona is nice.
Dave is not nice.