Task: Question Decomposition
Input (English): question: Find the name of the train whose route runs through greatest number of stations.
Output (English): #1 return trains 
#2 return routes of #1 
#3 return stations of #2 
#4 return number of  #3 for each #1 
#5 return #1 where #4 is highest 
#6 return name of #5