what are the flights from cleveland to indianapolis on wednesday may twelfth on either twa delta or continental 
return flights ;return #1 from  cleveland ;return #2 to indianapolis ;return #3 on  may twelfth ;return #4 on  twa ;return #4 on  delta ;return #4 on  continental ;return #5 , #6 ,  #7
['select', 'filter', 'filter', 'filter', 'filter', 'filter', 'filter', 'union']