It was not a trick question, it was a riddle. It makes perfect sense when you know the answer. The brain is what takes the input by the other orangs and turns it into useful information. Ex gracia, you look with your eyes but you see with the brain.
Kaldouns are not real, therefore they do not pertain to this riddle.
Try the second one, feel free to guess more than once if I tell you that you are wrong.