Complex sentence: Edwin O'Connor's best-selling 1956 novel, "The Last Hurrah", is set in an unnamed city, widely assumed to be Boston; its main character, Frank Skeffington, is likely based on James Michael Curley.
Split into simpler sentences: Edwin O'Connor's best-selling 1956 novel, "The Last Hurrah", is set in an unnamed city, widely assumed to be Boston. Its main character, Frank Skeffington, is likely based on James Michael Curley.