Task: Question Decomposition
Input (English): question: Find the total number of students enrolled in the colleges that were founded after the year of 1850 for each affiliation type.
Output (English): #1 return affiliation types 
#2 return colleges of  #1 
#3 return #2 founded after 1850 
#4 return students enrolled in #3 
#5 return number of #4 for each #1