Anne is big. Anne is nice. Anne is quiet. Anne is not round. Bob is not quiet. Dave is furry. Dave is white. Dave is young. Erin is round. Erin is white. If someone is round and not quiet then they are young. If someone is big then they are white. All furry people are white. If someone is round and furry then they are young. If Erin is white and Erin is not big then Erin is not furry. All furry, quiet people are young.
Bob is not white.