If a greyhound is holding a knitted toy with its front legs.
return greyhound ;return toy ;return #2 that is knitted ;return front legs of #1 ;return #1 that is holding #3 with #4 ;return number of  #5 ;return if  #6 is at least one
['select', 'select', 'filter', 'project', 'filter', 'aggregate', 'boolean']