What event happened later, Whitaker becoming a correspondent for WBTV, or for the CBS news program 60 minutes?
return Whitaker becoming a correspondent for WBTV ;return Whitaker becoming a correspondent for the  CBS news program 60 minutes ;return when  was  #1 ;return when  was  #2 ;return which is highest of #3 ,  #4
['select', 'select', 'project', 'project', 'comparison']