Complex sentence: On 19 November 2013, she filed an appeal for Liu Xiaobo's retrial, a move that's been called "extraordinary" because the action could refocus the world's attention on China's human rights record.
Split into simpler sentences: On 19 November 2013, she filed an appeal for Liu Xiaobo's retrial. A move that's been called "extraordinary" because the action could refocus the world's attention on China's human rights record.