<Li> Controversies (ban on Russian athletes) </Li> <Li> Closing ceremony (flag bearers) </Li> <Ul> <Li> IOC </Li> <Li> KOC </Li> <Li> POCOG </Li> </Ul> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul>

Who is performing at the winter olympics closing ceremony