Question: Who was the Stage 1 winner?
SQL: SELECT "Winner" FROM "1-22917458-15" WHERE "Stage" = 1.0;

Question: Who won Stage 7?
SQL: SELECT "Winner" FROM "1-22917458-15" WHERE "Stage" = 7.0;

Question: Who was the mountain classification winner in the stage won by Alessandro Ballan?
SQL: SELECT "Mountains classification Klasyfikacja górska" FROM "1-22917458-15" WHERE "Winner" = 'Alessandro Ballan';