Question: What was the constructor for Jo Bonnier of 6 rounds?
SQL: SELECT "Constructor" FROM "2-1140110-2" WHERE "Entrant" = 'Jo Bonnier' AND "Rounds" = '6';

Question: What was the driver with chassis of T45 T44 and rounds of 7?
SQL: SELECT "Driver" FROM "2-1140110-2" WHERE "Chassis" = 'T45 T44' AND "Rounds" = '7';