Complex sentence: Stephen Allen Schwarzman (born February 14,1947) is an Jewish American businessman and investor and the chairman and co-founder of the Blackstone Group, the private-equity and financial advisory firm.
Split into simpler sentences: Stephen Allen Schwarzman (born February 14,1947) is a Jewish American businessman and investor. He is the chairman and co-founder of the Blackstone Group, the private-equity and financial advisory firm.