generate questions: Some of the leading art groups of China are based in Nanjing; they include the Qianxian Dance Company, Nanjing Dance Company, Jiangsu Peking Opera Institute and Nanjing Xiaohonghua Art Company among others.
Where do some of the country's most prominent art groups call home? {sep_token} Which opera company is based in Nanjing? {sep_token} What art company is based in Nanjing? {sep_token} Name two dance groups that are based in Nanjing: {sep_token}