A young farmer is traveling to a village with a pet fox, a prize duck, and a sack of rare corn. He hits a wide river and finds a tiny raft.

The Rules:

1. The raft is so small it can only hold the farmer and exactly one item.
2. If left alone together, the fox will chase and eat the duck.
3. If left alone together, the duck will eat the corn.

The Goal: How can the farmer safely transport all three across the river without anything getting eaten?