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Oldest and youngest competitors Timetable Medal winners Detail results Seniors Team Oldest and youngest competitors Floor Oldest and youngest competitors Pommel horse Oldest and youngest competitors Rings Oldest and youngest competitors Vault Oldest and youngest competitors Parallel bars Oldest and youngest competitors Horizontal bar Oldest and youngest competitors Juniors All round Oldest and youngest competitors Floor Oldest and youngest competitors Pommel horse Oldest and youngest competitors Rings Oldest and youngest competitors Vault Oldest and youngest competitors Parallel bars Oldest and youngest competitors Horizontal bar Parallel bars Oldest and youngest competitors Medal count Seniors Juniors External links
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None