What is the organisation type and id of the organisation which has the most number of research staff?
return organisations ;return research staff of  #1 ;return number of  #2 for each  #1 ;return #1 where #3 is  highest ;return organisation type of  #4 ;return organisation id of  #4 ;return #5 ,  #6
['select', 'project', 'group', 'superlative', 'project', 'project', 'union']