If some of the beer is served in a glass, and some is still in bottles.
return glasses ;return bottles ;return beer ;return #1 in  which #3 is served ;return #2 in  which #3 is served ;return number of  #4 ;return number of  #5 ;return if  #6 is equal to  one ;return if  #7 is at least two ;return if  both  #8 and #9 are true
['select', 'select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']