I want to know the answer to the following question:
When was ile aux Cygnes created?
All the background I'm provided with is that "At its origin, before the Middle Ages, the city was composed around several islands and sandbanks in a bend of the Seine; of those, two remain today: the île Saint-Louis, the île de la Cité; a third one is the 1827 artificially created île aux Cygnes.". Is that enough to answer the question?