    Sentence #4 Which performers joinéd.. the  headliner daring: che Super Bow! 50 halftime  ‘show? be .  Sentence 2:'The Super Bowl 50, halftime Show! was  headlined, bythe, British r0ék . group “Coldplay.  ‘with special guest performer’: Besiince: and Brutio  Mais,.whoheadliried-the Super Bowl. XLVI-and :  Super Bow! XLVI halftime shows, respectively: ":