Dave is green. Dave is red. Dave is young. Fiona is big. Gary is big. Gary is rough. Harry is quiet. If someone is quiet then they are red. If Fiona is red and Fiona is green then Fiona is blue. All big, quiet people are rough. Red, blue people are big. All quiet people are green. If someone is rough then they are blue. All big, quiet people are red. Blue people are quiet.
Gary is not young.