If there are two adult geese leading no more than seven ducking.
return geese ;return #1 that are adult ;return #1 that are duckings ;return #2 that are leading #3 ;return number of  #4 ;return if  #5 is equal to  two ;return #3 that #2 are leading ;return number of  #7 ;return if  #8 is at most seven ;return if  both  #6 and #9 are true
['select', 'filter', 'filter', 'filter', 'aggregate', 'boolean', 'filter', 'aggregate', 'boolean', 'boolean']