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Oldest and youngest competitors Timetable Medal Winners Detail results Seniors Team Vault Uneven Bars Balance Beam Floor Juniors All-Around Oldest and youngest competitors Vault Oldest and youngest competitors Uneven Bars Oldest and youngest competitors Balance Beam Oldest and youngest competitors Floor 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