Task: Question Decomposition
Input (English): question: return me the number of papers by " H. V. Jagadish " on PVLDB after 2000 . 
Output (English): #1 return papers 
#2 return #1 by H. V. Jagadish 
#3 return #2 on  PVLDB 
#4 return #3 after 2000 
#5 return number of  #4