Complex sentence: The debutantes and their escorts that are presented either have family in the Society or they are invited as guests.They portray contemporaries based on the story line, which changes every year, that come out to honor the President and his First Lady.
Split into simpler sentences: The debutantes and their escorts that are presented either have family in the Society or they are invited as guests. The participants portray contemporaries based on the story line, which changes every year, that come out to honor the President and his First Lady.