Question: How many MotoGP winners were there when the circuit was Catalunya?
SQL: SELECT COUNT("MotoGP winner") FROM "1-26781017-1" WHERE "Circuit" = 'Catalunya';

Question: Who are all the Moto2 winners when the grand prix was Shell Advance Malaysian Grand Prix?
SQL: SELECT "Moto2 winner" FROM "1-26781017-1" WHERE "Grand Prix" = 'Shell Advance Malaysian Grand Prix';

Question: Who are all the motogp winners when the circuit was Catalunya?
SQL: SELECT "MotoGP winner" FROM "1-26781017-1" WHERE "Circuit" = 'Catalunya';