Question: Lobnoye mesto is located in front of a cathedral that was built beginning in what year?
Sentence (from "Saint Basil's Cathedral"): The building, now a museum, is officially known as the Cathedral of the Intercession of the Most Holy Theotokos on the Moat (Russian: Собор Покрова Пресвятой Богородицы, что на Рву , "Sobor Pokrova Presvyatoy Bogoroditsy, chto na Rvu") or Pokrovsky Cathedral (Russian: Покровский собор ).
Relevant evidence: No