Task: Question Answering
Input (English): Context : Count Fyodor Keller (Russian: Фёдор Келлер; 1850 - 31 July 1904) was a general in the Imperial Russian Army, noted for his role in the Battle of Motien Pass during the Russo-Japanese War. 
Question : Which conflict was Fyodor Keller a part of?
Output (English): Russo-Japanese War