What are the names and average prices of products for manufacturers whose products cost on average 150 or more?
return manufacturers ;return products  of  #1 ;return prices of  #2 ;return average  of  #3 for each  #1 ;return #1 where #4 is  at least 150 ;return products  of  #5 ;return names of  #6 ;return prices of  #6 ;return average  of  #8 for each  #5 ;return #7 ,  #9
['select', 'project', 'project', 'group', 'comparative', 'project', 'project', 'project', 'group', 'union']