user: Question: What is the average Year, when Competition is Oceania Youth Championships?
Columns: ['Year', 'Competition', 'Venue', 'Position', 'Event']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2000.0, 'Oceania Youth Championships', 'Adelaide , Australia', '1st', 'Javelin']
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Competition" = 'Oceania Youth Championships';