Question: What type of stadium aired the largest Professional Wrestling Pay Per View Event in history?
Sentence (from "Collision in Korea"): Collision in Korea, officially known as the Pyongyang International Sports and Culture Festival for Peace (平和のための平壌国際体育・文化祝典 , Heiwa no tame no Pyon'yan kokusai taiiku bunka shukuten ) , was the largest professional wrestling pay-per-view (PPV) event in history.
Relevant evidence: Yes