Bob is blue. Bob is green. Bob is nice. Bob is round. Dave is not blue. Dave is nice. Dave is not quiet. Dave is not round. Erin is blue. Harry is cold. Harry is green. Harry is nice. Harry is not quiet. Harry is rough. Harry is not round. If something is not quiet then it is nice. If Erin is nice and Erin is quiet then Erin is green.
Bob is rough.