71918
Whilst initially it was thought that only the portion used in the TV show survived , a full copy of the performance was found by the British Film Institute .
 British Film Institute
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:
 British Film Institute