Complex sentence: An estimated 2,000 people responded to Assad's invitation, among them were party ideologist Georges Saddiqni and Shakir al-Fahham, one of the secretaries of the Ba'ath Party's founding congress in 1947.
Split into simpler sentences: An estimated 2,000 people responded to Assad's invitation. Among those who responded were Georges Saddiqni, a party ideologist, and Shakir al-Fahham, one of the secretaries of the Ba'ath Party's founding congress in 1947.