Bob is big. Bob is green. Bob is quiet. Bob is not rough. Bob is round. Bob is young. Charlie is furry. Charlie is quiet. Charlie is rough. Charlie is young. Dave is big. Dave is rough. Dave is round. Fiona is big. Fiona is furry. Fiona is round. If Fiona is not furry and Fiona is not quiet then Fiona is big. If Bob is furry and Bob is rough then Bob is not young. Quiet people are green. All furry people are young. If someone is not rough then they are big. If someone is furry and young then they are round. All quiet people are green. Round people are green.
Fiona is not green.