conversations.from: human
conversations.value: Alfred is storing a tonne of maize each month for the next 2 years.  If 5 tonnes are stolen and 8 tonnes are given to him as a donation, how many tonnes of maize does he have at the end of the 2 years.
conversations.from: assistant
conversations.value: Before his maize is stolen, the maize he stores at the end of 1 year is 12*1= 12 tonnes of maize.
  Before his maize is stolen, the maize he stores at the end of 2 years is 12*2= 24 tonnes of maize.
  After his maize is stolen, he is left with 24-5=19 tonnes of maize.
  After he receives the maize donation, he has 19+8=27 tonnes of maize.