What are the minimum and maximum membership amounts for all branches that either opened in 2011 or are located in London?
return branches ;return #1 that  opened in 2011 ;return #1 that  are located in London ;return #2 or  #3 ;return membership amounts of #4 ;return minimum of #5 ;return maximum of #5 ;return #6 ,  #7
['select', 'filter', 'filter', 'union', 'project', 'aggregate', 'aggregate', 'union']