There's a girl going over to a friend's house. She's carrying a sack of grain, a chicken and a fox (don't ask me why, I don't know). She comes to a wide river and there's no bridge so she's going to have to swim across. But she can only take 1 item across with her at a time. She can't leave the fox & chicken together because the fox will eat the chicken & she can't leave the sack of grain with the chicken because the chicken will eat the grain. How is she going to get the sack of grain, the chicken and the fox across the river to get to her friend's house?