阅读下面的古诗，回答相关问题。
                                                                                                                                   乌衣巷
                                                                                                                                   刘禹锡
                                                                                                        朱雀桥边野草花，乌衣巷口夕阳斜。

                                                                                                       旧时王谢堂前燕，飞入寻常百姓家。