Who is performing in the back stage position for the song "Der Kapitan"? Show the first name and last name.
return the  song Der Kapitan ;return Who is  performing in #1 ;return #2 in the  back stage position ;return the  first name  of  #3 ;return the  last name  of  #3 ;return #4 ,  #5
['select', 'project', 'filter', 'project', 'project', 'union']