Task: Question Generation
Input (English): #1 return wild grains began being harvested 
#2 return the  potato was  domesticated 
#3 return year of #1 
#4 return years of #2 
#5 return the  lowest of #4 
#6 return the  difference of #5 and  #3
Output (English): How many years after wild grains began being harvested was the potato domesticated, at its earliest?