《晋书·志·第十七章》
到安帝，桓玄便篡位。
至安帝，桓玄乃篡位焉。
During the reign of Emperor An, Huan Xuan usurped the throne.
<s>[INST] 将以下英文转换为文言文: During the reign of Emperor An, Huan Xuan usurped the throne. [/INST] 至安帝，桓玄乃篡位焉。</s>
将以下英文转换为文言文: During the reign of Emperor An, Huan Xuan usurped the throne.
user
至安帝，桓玄乃篡位焉。
assistant