Question: What is the cause of death of composer of film Impromptu (1991 Film)?
Sentence (from "Impromptu (1991 film)"): Impromptu is a 1991 British-American period drama film directed by James Lapine, written by Sarah Kernochan, produced by Daniel A. Sherkow and Stuart Oken, and starring Hugh Grant as Frédéric Chopin and Judy Davis as George Sand.
Relevant evidence: Yes