Task: Question Generation
Input (English): #1 return phones 
#2 return carriers of  #1 
#3 return #1 where #2 is  Sprint 
#4 return #1 where #2 is  TMobile 
#5 return #3 or  #4 
#6 return names of  #5
Output (English): Show the names of phones with carrier either "Sprint" or "TMobile".