Task: Question Generation
Input (English): #1 return Jan Kunowski wrote her poems 
#2 return the  Treaty of Polanów 
#3 return when  was  #1 
#4 return when  was  #2 
#5 return difference of #3 and  #4
Output (English): How many years before Jan Kunowski wrote her poems did the Treaty of Polanów happen?