Complex sentence: Nikolai Semashko (1874-1949) was a Russian Communist and long time member of the Bolshevik Party who became People's Commissar of Public Health in 1923.
Split into simpler sentences: Nikolai Semashko (1874-1949), Russian Communist, long time member of the Bolshevik Party. Semashko became People's Commissar of Public Health in 1923.