Complex sentence: Burns and Allen, an American comedy duo consisting of George Burns and his wife, Gracie Allen, worked together as a comedy team in vaudeville, films, radio and television and achieved great success over four decades.
Split into simpler sentences: Burns and Allen was an American comedy duo consisting of George Burns and his wife, Gracie Allen. They worked together as a comedy team in vaudeville, films, radio and television and achieved great success over four decades.