Complex sentence: The Authority initially ended on November 23,2014 at Survivor Series when their team lost to Team Cena in the main event; however, Cena was forced to bring them back on the December 29 episode of "Raw".
Split into simpler sentences: The Authority initially ended on November 23,2014 at Survivor Series when their team lost to Team Cena in the main event. However, John Cena was forced to bring them back on the December 29 episode of "Raw".