Question: What winner has Silence-Lotto as the team classification?
SQL: SELECT "Winner" FROM "2-17636839-17" WHERE "Team Classification" = 'Silence-Lotto';

Question: What general classification has David de la Fuente as mountains classification, and Thor Hushovd as points classification?
SQL: SELECT "General classification" FROM "2-17636839-17" WHERE "Mountains classification" = 'David de la Fuente' AND "Points classification" = 'Thor Hushovd';

Question: What general classification has Levi Leipheimer as points classification?
SQL: SELECT "General classification" FROM "2-17636839-17" WHERE "Points classification" = 'Levi Leipheimer';

Question: What team classification has Alejandro Valverde as points classification, with Alejandro Valverde as the winner, with 3 as the stage?
SQL: SELECT "Team Classification" FROM "2-17636839-17" WHERE "Points classification" = 'Alejandro Valverde' AND "Winner" = 'Alejandro Valverde' AND "Stage" = '3';

Question: What winner has Pierre Rolland as mountains classification, with 7 as the stage?
SQL: SELECT "Winner" FROM "2-17636839-17" WHERE "Mountains classification" = 'Pierre Rolland' AND "Stage" = '7';

Question: What general classification has 4 as the stage?
SQL: SELECT "General classification" FROM "2-17636839-17" WHERE "Stage" = '4';