Bob is quiet. Bob is white. Charlie is furry. Charlie is quiet. Dave is furry. Dave is quiet. Harry is cold. Harry is quiet. Harry is rough. Harry is round. Harry is white. Quiet things are round. All big things are furry. All round things are quiet. If something is cold then it is rough. If Harry is cold and Harry is furry then Harry is big. Big, white things are cold. All rough, round things are big. If something is cold and furry then it is quiet. If something is round and quiet then it is cold.
Bob is not furry.