Task: Question Decomposition
Input (English): question: what is the fare from philadelphia to pittsburgh business class one way 
Output (English): #1 return flights 
#2 return #1 from  philadelphia 
#3 return #2 to pittsburgh 
#4 return #3 in business class 
#5 return #4 that  is  one way 
#6 return fares of #5