Complex sentence: Steven Lawrence Rattner (born July 5,1952) was an American financier and private equity investor who was one of four founding partners of the private investment firm Quadrangle Group, which invests in media and communications companies globally.
Split into simpler sentences: Steven Lawrence Rattner (born July 5,1952) is an American financier and private equity investor. He is one of the four founding partners of the private investment firm Quadrangle Group, which invests in media and communications companies globally.