Find the id and name of the museum that has the most staff members?
return museums ;return staff members of  #1 ;return number of  #2 for each  #1 ;return #1 where #3 is  highest ;return name of  #4 ;return id of  #4 ;return #6 ,  #5
['select', 'project', 'group', 'superlative', 'project', 'project', 'union']