Original sentence: Simferopol (; , ; ; , Акъмесджит) is a city on the Crimean Peninsula which is, since the 2014 annexation of Crimea by the Russian Federation, the de facto capital city of the Republic of Crimea within the Russian Federation
Edited sentence: Simferopol (; , ; ; , Акъмесджит) is a city on the Crimean Peninsula which is the de facto capital city of the Republic of Crimea within the Russian Federation