Table: t_1976_f1_season
Columns: constructor
chassis
engine
tyre
driver
rounds

Question: What Chassis was driven by Otto Stuppacher?
SQL: SELECT "chassis" FROM t_1976_f1_season WHERE "driver" = 'otto stuppacher'

Question: Who drove the car with the n175 chassis in round 13?
SQL: SELECT "driver" FROM t_1976_f1_season WHERE "chassis" = 'n175' AND "rounds" = '13'

Question: What chassis did John Watson drive?
SQL: SELECT "chassis" FROM t_1976_f1_season WHERE "driver" = 'john watson'