user: Question: What is the earliest year of Valdimir Poelnikov, who has a final position-tour bigger than 72, a final position-vuelta less than 77, and a final position-giro less than 57?
Columns: ['Rider', 'Year', 'Final Position - Giro', 'Final Position - Tour', 'Final Position - Vuelta']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Adam Hansen', 2013.0, 72.0, 72.0, 60.0]
SQL:

assistant: SELECT MIN("Year") FROM "Table" WHERE "Final Position - Tour" > 72.0 AND "Final Position - Vuelta" < 77.0 AND "Final Position - Giro" < 57.0 AND "Rider" = 'Valdimir Poelnikov';