educational services, namely, providing courses of instruction at the undergraduate, graduate, and professional level; arranging and conducting educational conferences; development and dissemination of educational materials; educational research; entertainment in the nature of theater productions; entertainment in the nature of art exhibitions; educational services, namely, providing courses of instruction at the undergraduate, graduate, and professional level; arranging and conducting educational conferences; development and dissemination of educational materials of others in the field of liberal arts; educational research; entertainment in the nature of theater productions; entertainment in the nature of art exhibitions; entertainment, namely, live music concerts; arranging and conducting athletic competitions; entertainment in the nature of competitions in the field of athletics and sporting events