If the feet and legs of many people running in a race are shown.
return people ;return #1 that are running in  a  race ;return feet of #2 ;return legs of #2 ;return #2 where  #3 are shown ;return #5 where  #4 are shown ;return number of  #6 ;return if  #7 is many
['select', 'filter', 'project', 'project', 'comparative', 'comparative', 'aggregate', 'boolean']