Bob is nice. Bob is round. Bob is not white. Charlie is furry. Charlie is nice. Charlie is quiet. Charlie is round. Dave is furry. Dave is white. Fiona is furry. All round things are cold. All nice things are round. If something is white then it is round. All cold, white things are quiet. Quiet things are nice. Furry things are white. If something is white and cold then it is quiet.
Bob is not nice.