user: Question: What event (Extra) in 2002 did the competitor compete in and place 8th?
Columns: ['Year', 'Tournament', 'Venue', 'Result', 'Extra']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1991.0, 'European Junior Championships', 'Thessaloniki , Greece', '1st', '4x100 m relay']
SQL:

assistant: SELECT "Extra" FROM "Table" WHERE "Year" = 2002.0 AND "Result" = '8th';