Complex sentence: Sergio DellaPergola (born Trieste, Italy, September 7,1942) is an Italian-born Israeli professor and demographic expert, widely acknowledged as the leading authority in demography and statistics related to the Jewish population all over the world.
Split into simpler sentences: Sergio DellaPergola (born Trieste, Italy, September 7,1942) is an Italian-born Israeli demographer and statistician. He is a professor and demographic expert, widely acknowledged as the leading authority in demography and statistics related to the Jewish population all over the world.