If one of the images shows an empty flask and the other image shows a flask containing liquid.
return flask ;return #1 that is empty ;return liquid ;return #1 containing #3 ;return if  #2 is in  one of the  images ;return if  #4 is in  other image ;return if  both  #5 and #6 is true
['select', 'filter', 'select', 'filter', 'boolean', 'boolean', 'boolean']