I want to know the answer to the following question:
In what year was Napoleon's final tomb completed?
All the background I'm provided with is that "The hearse proceeded from the Arc de Triomphe down the Champs-Élysées, across the Place de la Concorde to the Esplanade des Invalides and then to the cupola in St Jérôme's Chapel, where it remained until the tomb designed by Louis Visconti was completed.". Is that enough to answer the question?
Answer: no