Human: One chicken plus 2 chickens, how many chickens are there?
Assistant

: There are 4 chickens.
The chicken that was handed to the chicken plus the 2 chickens also handed to the two chickens.
The chickens were initially hand-fed 1 chicken and were given 1 chicken each. So, there are a total of 4 chickens that were fed and hand-fed, and together they all received 1 chicken.