I want to know the answer to the following question:
The city of Varna is located on what coast of the Black Sea?
All the background I'm provided with is that "In July 1854, the Turks under Omar Pasha crossed the Danube into Wallachia and on 7 July 1854, engaged the Russians in the city of Giurgiu and conquered it.". Is that enough to answer the question?
Answer: no