user: Question: Which Stage (Winner) has a Vladimir Karpets General classification and a Team classification of Relax-GAM, and a Points classification of Denis Menchov?
Columns: ['Stage (Winner)', 'General Classification', 'Mountains Classification', 'Points Classification', 'Sprints classification', 'Team Classification']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ["0 Stage 1 ( TTT ) ( Caisse d'Epargne )", 'Vladimir Karpets', 'no award', 'no award', 'no award', "Caisse d'Epargne"]
SQL:

assistant: SELECT "Stage (Winner)" FROM "Table" WHERE "General Classification" = 'Vladimir Karpets' AND "Team Classification" = 'Relax-GAM' AND "Points Classification" = 'Denis Menchov';