Complex sentence: Mary Todhunter Clark Rockefeller (June 17,1907--April 21,1999) was the first wife of Nelson Aldrich Rockefeller, a Governor of New York who served, after their divorce, as 41st Vice President of the United States.
Split into simpler sentences: Mary Todhunter Clark Rockefeller (June 17,1907--April 21,1999) was the first wife of Nelson Aldrich Rockefeller, a Governor of New York. He served, after their divorce, as the 41st Vice President of the United States.