96464
In relation to the Heysel Stadium disaster one study from 1986 claimed that alcohol , irregular tickets sales , the disinterest of the organisers and the " ' cowardly ineptitude ' " of the police had led to the tragedy .
 Heysel Stadium disaster
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Heysel Stadium disaster