Complex sentence: Joseph-Henri baron de Jessé (1746--1794), was a French nobleman and government official, who served as President of the French National Constituent Assembly from 30 August 1790 to 10 September 1790.
Split into simpler sentences: Joseph-Henri baron de Jessé (1746-1794), was a French nobleman and government official. He served as President of the French National Constituent Assembly from 30 August 1790 to 10 September 1790.