Anne is blue. Anne is not quiet. Bob is cold. Bob is red. Dave is blue. Dave is cold. Dave is furry. Dave is green. Dave is nice. Dave is quiet. Dave is not red. Fiona is cold. All red, cold people are furry. If someone is quiet and furry then they are nice. If someone is not green then they are not nice. If Fiona is quiet then Fiona is not blue. If someone is furry and green then they are cold. If Bob is green and Bob is blue then Bob is not nice.
Bob is not furry.