Complex sentence: At the end of the book, his curse is lifted by Dionysus just before he is sent back to the Underworld as he attempts to take some food along, though none of the campers are sad to see him go.
Split into simpler sentences: At the end of the book, his curse is lifted by Dionysus just before he is sent back to the Underworld as he attempts to take some food along. None of the campers are sad to see him go.