If there is at least 1 black and 1 white dog near some grass.
return dogs ;return grass ;return #1 that are near #2 ;return #3 that are black ;return #3 that are white ;return number of  #4 ;return number of  #5 ;return if  #6 is at least one ;return if  #7 is at least one ;return if  both  #8 and #9 are true
['select', 'select', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']