What were the two most abundant types of factories on the island?
return the  island ;return factories on #1 ;return types of #2 ;return number of  #2 for each #3 ;return #3 where #4 is highest ;return #3 besides  #5 ;return #6 where #4 is highest ;return #5 ,  #7
['select', 'project', 'project', 'group', 'superlative', 'discard', 'superlative', 'union']