Bob is green. Bob is nice. Bob is quiet. Bob is round. Bob is white. Charlie is cold. Charlie is green. Charlie is nice. Charlie is white. Fiona is big. If something is nice then it is quiet. Round things are nice. All cold things are quiet. Green things are big. If something is quiet and cold then it is white. Big things are round. If something is white then it is quiet. If something is nice and cold then it is round.
Fiona is not white.