Teacher:In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Teacher: Now, understand the problem? Solve this instance: What has been done by the government towards the sculptural ensembles?, Context: A number of sculptural ensembles of that era, erected at the tombs of royals and other dignitaries, have survived (in various degrees of preservation) in Nanjing's northeastern and eastern suburbs, primarily in Qixia and Jiangning District. Possibly the best preserved of them is the ensemble of the Tomb of Xiao Xiu (475–518), a brother of Emperor Wu of Liang. The period of division ended when the Sui Dynasty reunified China and almost destroyed the entire city, turning it into a small town.
Student:
preservation