Table: t_1950_f1_race
Columns: race_name
circuit
date
winning_driver
constructor
report

Question: What date was the Silverstone circuit driven? 
SQL: SELECT "date" FROM t_1950_f1_race WHERE "circuit" = 'Silverstone'

Question: When was the Albi circuit race driven? 
SQL: SELECT "date" FROM t_1950_f1_race WHERE "circuit" = 'Albi'

Question: Would built the winning car in the IV J.C.C. Jersey Road Race? 
SQL: SELECT "constructor" FROM t_1950_f1_race WHERE "race_name" = 'IV J.C.C. Jersey Road Race'

Question: Who won the race at the Jersey circuit? 
SQL: SELECT "winning_driver" FROM t_1950_f1_race WHERE "circuit" = 'Jersey'