The Government was known officially as the Council of People's Commissars (1917–1946), Council of Ministers (1946–1978) and Council of Ministers–Government (1978–1991). The first government was headed by Vladimir Lenin as "Chairman of the Council of People's Commissars of the Russian SFSR" and the last by Boris Yeltsin as both head of government and head of state under the title "President".

Answer this question, if possible (if impossible, reply "unanswerable"): What was the RSFSR government called starting in 1964?
unanswerable