Question: Leoš Janáček and Sergei Prokofiev are both what?
Sentence (from "Leoš Janáček"): Leoš Janáček (] , baptised Leo Eugen Janáček; 3 July 1854 – 12 August 1928) was a Czech composer, musical theorist, folklorist, publicist and teacher.
Relevant evidence: Yes