Original sentence: Altough the Orthodox Church of Constantinople, headed by the Patriarch of Constantinople resides since many centuries in Istambul (Constantinopel), the number of Greek orthodox believers in Turlkey has dramatically decreased over the last decennia as a result of implicit and explicit discrimination by the Turkish state
Edited sentence: Although the Orthodox Church of Constantinople, headed by the Patriarch of Constantinople resides since many centuries in Istanbul (Constantinople, New Rome), the number of Greek Orthodox believers in Turkey (Turk occupied Anatolia and Thrace) has dramatically decreased over the last decennia as a result of implicit and explicit discrimination by the Turkish state