Conversation so far:
How did Boris Yeltsin die?
Boris Yeltsin died of congestive heart failure
what caused Boris Yeltsin's death?
According to experts quoted by Komsomolskaya Pravda, the onset of Yeltsin's condition was due to his visit to Jordan between 25 March and 2 April.

Question: where was his funeral?
Self-contained rewrite: where was Boris Yeltsin's funeral?