Bob is round. Erin is young. Harry is cold. Harry is quiet. Harry is rough. Harry is not round. Harry is not young. If Erin is white and Erin is not cold then Erin is rough. If Harry is quiet and Harry is young then Harry is white. If something is round and not rough then it is furry. If something is cold and not rough then it is quiet. If something is rough and not quiet then it is furry. If something is young and not quiet then it is white.
Bob is not rough.