105908
In 1977 Niklaus Wirth formalized this proposition by publishing a self-replicating deterministic context-free grammar .
 Niklaus Wirth
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:
 Niklaus Wirth