Charlie is big. Charlie is furry. Charlie is not nice. Charlie is quiet. Charlie is not round. Charlie is young. Dave is furry. Dave is quiet. Dave is not round. Dave is young. All nice, kind people are not young. All nice, young people are quiet. If Dave is kind and Dave is furry then Dave is not quiet. If someone is round then they are not big. If Charlie is not furry then Charlie is young. If someone is nice and not young then they are round.
Dave is nice.