I want to know the answer to the following question:
Where were Victoria and Albert honored guests at ball thrown by Napoleon III?
All the background I'm provided with is that "They visited the Exposition Universelle (a successor to Albert's 1851 brainchild the Great Exhibition) and Napoleon I's tomb at Les Invalides (to which his remains had only been returned in 1840), and were guests of honour at a 1,200-guest ball at the Palace of Versailles.". Is that enough to answer the question?