Table: t_1951_f1_drivers
Columns: entrant
constructor
chassis
engine
tyre
driver
rounds

Question: In what rounds did Scuderia Milano participate?
SQL: SELECT "rounds" FROM t_1951_f1_drivers WHERE "entrant" = 'scuderia milano'

Question: Who was the entrant for Louis Chiron with a Chassis of T26C?
SQL: SELECT "entrant" FROM t_1951_f1_drivers WHERE "driver" = 'louis chiron' AND "chassis" = 't26c'

Question: In what rounds did Luigi Fagioli drive for Alfa Romeo SPA?
SQL: SELECT "rounds" FROM t_1951_f1_drivers WHERE "entrant" = 'alfa romeo spa' AND "driver" = 'luigi fagioli'

Question: In what rounds did the P15 Chassis and tyre D participate?
SQL: SELECT "rounds" FROM t_1951_f1_drivers WHERE "tyre" = 'd' AND "chassis" = 'p15'