Bob is blue. Bob is green. Bob is round. Charlie is green. Charlie is quiet. Dave is big. Dave is blue. Dave is round. Dave is white. Fiona is big. Fiona is quiet. Fiona is round. If Fiona is cold then Fiona is white. If someone is quiet then they are green. All green, cold people are blue. If Bob is blue and Bob is green then Bob is big. If someone is blue and quiet then they are white. If Fiona is green and Fiona is big then Fiona is blue.
Dave is green.