Question: Which of these has its entrance in Piyer Loti Caddesi, Hagia Sophia or Theodosius Cistern?
Sentence (from "Hagia Sophia"): The Roman Empire's first Christian Cathedral, from the date of its construction in 537 AD, and until 1453, it served as an Eastern Orthodox cathedral and seat of the Patriarch of Constantinople, except between 1204 and 1261, when it was converted by the Fourth Crusaders to a Roman Catholic cathedral under the Latin Empire.
Relevant evidence: No