Table: mclaren_1966_f1
Columns: entrant
constructor
chassis
engine
tyre
driver
rounds

Question: Name the engine with rounds of 7 with geki driver
SQL: SELECT "engine" FROM mclaren_1966_f1 WHERE "rounds" = '7' AND "driver" = 'geki'

Question: Name the driver for 3 rounds
SQL: SELECT "driver" FROM mclaren_1966_f1 WHERE "rounds" = '3'