If there are two black dung beetles touching both the ground and the dung circle.
return dung beetles ;return #1 that are black ;return the  ground ;return the  dung circle ;return #2 touching #3 ;return #2 touching #4 ;return #2 in  both  #5 and #6 ;return number of  #7 ;return if  #8 is equal to  two
['select', 'filter', 'select', 'select', 'filter', 'filter', 'intersection', 'aggregate', 'boolean']