If the left image contains at least 4 students in gowns, and you can see their entire body, head to foot.
return left image ;return students in  #1 ;return #2 that are in  gowns ;return body of #3 ;return #4 that is head to  foot ;return number of  #5 ;return if  #6 is at least 4
['select', 'project', 'filter', 'project', 'filter', 'aggregate', 'boolean']