Question: The unfinished opera Modest Mussorgsky was written by a man who was a member of numeric group.
Sentence (from "Salammbô (Mussorgsky)"): Salammbô (Russian: Саламбо, "Salambo" [alternative title: The Libyan (Russian: Ливиец, "Liviyets" )]) is an unfinished opera in 4 acts by Modest Mussorgsky.
Relevant evidence: Yes