user: Question: What are the competitions that occurred before 2006 in SVK Nitra?
Columns: ['Competition', 'Venue', 'Year', 'Category', 'Result']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['World Championships', 'POL Leszno', 1999.0, 'World Class', 'Bronze']
SQL:

assistant: SELECT "Competition" FROM "Table" WHERE "Year" < 2006.0 AND "Venue" = 'SVK Nitra';