Question: Vladmir Filatov was able to save the eyesight of sniper Vasily Zaytsev during what battle?
Sentence (from "Vladimir Filatov"): Vladimir Petrovich Filatov (Russian: Владимир Филaтoв , 15 [O.S. 27] February 1875, Mikhaylovka, Penza Governorate, Russian Empire - 30 October 1956, Odessa, Ukrainian SSR) was a Russian and Ukrainian ophthalmologist and surgeon best known for his development of tissue therapy.
Relevant evidence: No