Complex sentence: At the Indigo Plateau, trainers face off with the Elite Four and the Champion in the video games; in the anime, an annual match is held in the Indigo Stadium between trainers, of which the last standing is crowned Champion.
Split into simpler sentences: At the Indigo Plateau, trainers face off with the Elite Four and the Champion in the video games. In the anime, an annual match is held in the Indigo Stadium between trainers; the last standing is crowned Champion.