If two saxophones with no musicians are lying down.
return saxophones ;return musicians ;return #1 that are with #2 ;return #1 besides  #3 ;return #4 that are lying down ;return number of  #5 ;return if  #6 is equal to  two
['select', 'select', 'filter', 'discard', 'filter', 'aggregate', 'boolean']