what is the name and position of the head whose department has least number of employees?
return departments ;return employees of  #1 ;return number of  #2 for each  #1 ;return #1 where #3 is  lowest ;return head of  #4 ;return name of  #5 ;return position of  #5 ;return #6 ,  #7
['select', 'project', 'group', 'superlative', 'project', 'project', 'project', 'union']