Table: t_1950_british_grand_prix
Columns: driver
entrant
constructor
chassis
engine
tyre

Question: what is the tyre when the entrant is scuderia milano?
SQL: SELECT "tyre" FROM t_1950_british_grand_prix WHERE "entrant" = 'scuderia milano'

Question: who is the driver with the engine era 1.5 l6 s and the chassis is era b?
SQL: SELECT "driver" FROM t_1950_british_grand_prix WHERE "engine" = 'era 1.5 l6 s' AND "chassis" = 'era b'

Question: who is the driver when the constructor is maserati, the chassis is maserati 4clt-48 and the tyre is d?
SQL: SELECT "driver" FROM t_1950_british_grand_prix WHERE "constructor" = 'maserati' AND "chassis" = 'maserati 4clt-48' AND "tyre" = 'd'

Question: who is the constructor when the tyre is d, the engine is talbot 23cv 4.5 l6, the chassis is talbot-lago t26c and the entrant is ecurie belge?
SQL: SELECT "constructor" FROM t_1950_british_grand_prix WHERE "tyre" = 'd' AND "engine" = 'talbot 23cv 4.5 l6' AND "chassis" = 'talbot-lago t26c' AND "entrant" = 'ecurie belge'