Complex sentence: In the same year he organized what he called a Fame Exchange during the New York Avant Garde Festival; he hired a group of admirers to follow him instead of John Lennon and Yoko Ono.
Split into simpler sentences: In the same year, he organized what he called a Fame Exchange during the New York Avant Garde Festival. He hired a group of admirers to follow him instead of John Lennon and Yoko Ono.