Is the small green thing the same shape as the small blue thing?
return things ;return #1 that  are small ;return #2 that  are green ;return #2 that  are blue ;return the   shape of #3 ;return the   shape of #4 ;return is  #5 the   same as #6
['select', 'filter', 'filter', 'filter', 'project', 'project', 'boolean']